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APW7078
Active
Single Step-up DC/DC Controller
Features
General Description
The APW7078 is a single PWM, step-up DC-DC controller with low operating voltage application integrating softstart and short circuit detection function. The oscillator switching frequency on chip can be operated by terminating OSC pin to connect capacitor and resistor for adjustable operating frequency. Soft-start is adjusted with the external capacitor, which sets the input current ramp. Besides, the external compensation FB pin will apply the flexibility in the dynamic loop status, which allows using small and low equivalent series resistance (ESR) ceramic output capacitors.
Features
- 2.5 to 5.5V Input Voltage Range
- Adjustable Frequency: Maximum 1MHZ
- Incorporates Soft-Start Function
- Built-in Short-Circuit Detection Circuit (SCP)
- Low Operating Current: Maximum to 1mA
- Low Shutdown Current: Maximum to 1µA
- Package: SOP-8, MSOP-8, TDFN2x2-8 and TSSOP-8
- Under-Voltage Lockout
- Lead Free and Green Devices Available (RoHS Compliant)
General Description
The APW7078 is a single PWM, step-up DC-DC controller with low operating voltage application integrating softstart and short circuit detection function. The oscillator switching frequency on chip can be operated by terminating OSC pin to connect capacitor and resistor for adjustable operating frequency. Soft-start is adjusted with the external capacitor, which sets the input current ramp. Besides, the external compensation FB pin will apply the flexibility in the dynamic loop status, which allows using small and low equivalent series resistance (ESR) ceramic output capacitors.
APW7137
Active
1MHz, High Efficiency, Step-Up Converter with Internal FET Switch
Features
- Fast Transient Response
General Description
The APW7137 is a fixed switching frequency (1MHz typical), current-mode, step-up regulator with an integrated N-channel MOSFET. The device allows the usage of small inductors and output capacitors for portable devices. The current-mode control scheme provides fast transient response and good output voltage accuracy. The APW7137 includes under-voltage lockout, current limit, and over-temperature shutdown preventing damage in the event of an output overload.
Features
- Wide 2.5V to 6V Input Voltage Range
- Built-in 0.6Ω N-Channel MOSFET
- Built-in Soft-Start
- High Efficiency up to 90%
- <1µA Quiescent Current During Shutdown
- Current-Mode Operation
- Fast Transient Response
- Current-Limit Protection
- Over-Temperature Protection with Hysteresis
- Available in a Tiny 5-Pin SOT-23 and TSOT-23 Packages
- Lead Free and Green Devices Available (RoHS Compliant)
General Description
The APW7137 is a fixed switching frequency (1MHz typical), current-mode, step-up regulator with an integrated N-channel MOSFET. The device allows the usage of small inductors and output capacitors for portable devices. The current-mode control scheme provides fast transient response and good output voltage accuracy. The APW7137 includes under-voltage lockout, current limit, and over-temperature shutdown preventing damage in the event of an output overload.
APW7237
Active
1.5MHz, High Efficiency, Step-Up Converter with Internal FET Switch
Features
- Fast Transient Response
General Description
The APW7237 is a fixed switching frequency (1.5MHz typical), current-mode, step-up regulator with an integrated N-channel MOSFET. The device allows the usage of small inductors and output capacitors for portable devices. The current-mode control scheme provides fast transient response and good output voltage accuracy. The APW7237 includes under-voltage lockout, current limit, and over-temperature shutdown preventing damage in the event of an output overload.
Features
- Wide 2.7V to 6V Input Voltage Range
- Built-in 0.2Ω N-Channel MOSFET
- Built-in Soft-Start
- High Efficiency up to 90%
- <1µA Quiescent Current During Shutdown
- Current-Mode Operation
- Fast Transient Response
- Current-Limit Protection
- Over-Temperature Protection with Hysteresis
- Available in a TSOT-23-5A and TDFN2x2-6 Package
- Lead Free and Green Devices Available (RoHS Compliant)
General Description
The APW7237 is a fixed switching frequency (1.5MHz typical), current-mode, step-up regulator with an integrated N-channel MOSFET. The device allows the usage of small inductors and output capacitors for portable devices. The current-mode control scheme provides fast transient response and good output voltage accuracy. The APW7237 includes under-voltage lockout, current limit, and over-temperature shutdown preventing damage in the event of an output overload.
APW7251
Active
Boost and Dual LDOs with POK
Features
APW7251A: 12.3V
- 100mV at 150mA (LDO2_3.3V)
- 100mV at 150mA (LDO2_3.2V_APW7251A)
General Description
The APW7251 contains a PWM Boost converter, a 1.8V linear regulator and a 3.3V linear regulator. The PWM boost converter is a high frequency step-up DC/DC converter. Its output voltage is set by an internal feedback divider at 13.5V and 12.3V. The regulator is a P-channel low dropout linear regulator with POK which needs only one input voltage from 3V to 5.5V, and delivers current up to 10mA to set output voltage. Typical dropout voltage is 450mV at 150mA loading for 1.8V output, and 100mV at 150mA loading for 3.3V output. The APW7251 has power-on-reset and soft start functions to prevent wrong operation and limit the surge current during power-on or start-up. It also has thermal shutdown function to protect the device against overtemperature.
Features
- Wide Input Voltage from 3V to 5.5V
- Built-in Soft-start
- Boost Converter Fixed Output Voltage:
APW7251A: 12.3V
- <1uA Quiescent Current During Shutdown
- Boost Converter in PFM Mode
- Internal Switch Current Limit: 250mA
- High Efficiency at 3.3V to 18V/10mA
- Dual LDOs With POK
- High PSRR: 70dB at 1KHz
- Low Dropout Voltage:
- 100mV at 150mA (LDO2_3.3V)
- 100mV at 150mA (LDO2_3.2V_APW7251A)
- 2x2mm TQFN-12 Packages
- Lead Free and Green Devices Available (RoHS Compliant)
General Description
The APW7251 contains a PWM Boost converter, a 1.8V linear regulator and a 3.3V linear regulator. The PWM boost converter is a high frequency step-up DC/DC converter. Its output voltage is set by an internal feedback divider at 13.5V and 12.3V. The regulator is a P-channel low dropout linear regulator with POK which needs only one input voltage from 3V to 5.5V, and delivers current up to 10mA to set output voltage. Typical dropout voltage is 450mV at 150mA loading for 1.8V output, and 100mV at 150mA loading for 3.3V output. The APW7251 has power-on-reset and soft start functions to prevent wrong operation and limit the surge current during power-on or start-up. It also has thermal shutdown function to protect the device against overtemperature.
APW7272
Active
24V, 4A Asynchronous Boost Converter
Features
- Fast Transient Response
General Description
The APW7272 is a asynchronous rectifier, fixed switching frequency (600kHz or 1.2MHz typical), and current-mode step-up regulator. The device allows use of small inductors and output capacitors. The current-mode control scheme provides fast transient response and good output voltage accuracy. At light loads, the APW7272 will automatically enter in Pulse Skip Mode (PSM) operation to reduce the dominant switching losses. During PSM operation, the IC consumes very low quiescent current and maintains high efficiency over the complete load range. The APW7272 also includes current-limit and over-temperature shutdown to prevent damage in the event of an output overload. The APW7272 is available in 3mmx3mm TDFN3x3-10 package.
Features
- Wide 2.6V to 6V Input Voltage Range
- Built-in 125mΩ N-Channel MOSFET
- Built-in Adjustable Soft-Start Function
- High Efficiency up to 90%
- Current-Mode Operation
- Fast Transient Response
- Current-Limit Protection
- Over-Temperature Protection with Hysteresis
- Built in EN Function For Timing Control
- Selectable Frequency 600kHz/1.2MHz
- Available in TDFN3x3-10 Package
- Lead Free and Green Devices Available (RoHS Compliant)
General Description
The APW7272 is a asynchronous rectifier, fixed switching frequency (600kHz or 1.2MHz typical), and current-mode step-up regulator. The device allows use of small inductors and output capacitors. The current-mode control scheme provides fast transient response and good output voltage accuracy. At light loads, the APW7272 will automatically enter in Pulse Skip Mode (PSM) operation to reduce the dominant switching losses. During PSM operation, the IC consumes very low quiescent current and maintains high efficiency over the complete load range. The APW7272 also includes current-limit and over-temperature shutdown to prevent damage in the event of an output overload. The APW7272 is available in 3mmx3mm TDFN3x3-10 package.
APW9100
Active
1.4MHz, Synchronous Step-Up Converter with VID Function
Features
- Pull High: 15.5V (APW9100V)
- Pull Low: 12V
- Fast Transient Response
General Description
The APW9100 is a 1.4MHz fixed frequency Synchronous Boost converter using a current mode architecture that allows for synchronizing the part to an external clock for noise sensitive applications such as DSL modems. The devices has built in Nch boost MOSFET as well as a Pch synchronous MOSFET acting as diode in the IC which eliminates an external Schotcky diode that is otherwise needed for typical boost converters. This also allows for true shut down of the converter when device is disabled. Other features of the part; includes VID pin that allows smooth transition between 12V and 15V/15.5V output, input and output under voltage lock out, current limit and over temperature protection.
Features
- Wide Input voltage range: 3V to 6V
- Synchronous rectification
- Truly Shut Down
- Built-in Soft-Start
- Synchronization to External Clock
- VID Pin for Selecting Output Voltage
- Pull High: 15.5V (APW9100V)
- Pull Low: 12V
- Continuous Current-Mode Operation
- Fast Transient Response
- Built in OVP, UVP, Current Limit and OTP
- Available in a TDFN2x2-8C package
- Lead Free and Green Devices Available (RoHS Compliant)
General Description
The APW9100 is a 1.4MHz fixed frequency Synchronous Boost converter using a current mode architecture that allows for synchronizing the part to an external clock for noise sensitive applications such as DSL modems. The devices has built in Nch boost MOSFET as well as a Pch synchronous MOSFET acting as diode in the IC which eliminates an external Schotcky diode that is otherwise needed for typical boost converters. This also allows for true shut down of the converter when device is disabled. Other features of the part; includes VID pin that allows smooth transition between 12V and 15V/15.5V output, input and output under voltage lock out, current limit and over temperature protection.
APW9100V
Active
1.4MHz, Synchronous Step-Up Converter with VID Function
Features
- Pull High: 15.5V (APW9100V)
- Pull Low: 12V
- Fast Transient Response
General Description
The APW9100 is a 1.4MHz fixed frequency Synchronous Boost converter using a current mode architecture that allows for synchronizing the part to an external clock for noise sensitive applications such as DSL modems. The devices has built in Nch boost MOSFET as well as a Pch synchronous MOSFET acting as diode in the IC which eliminates an external Schotcky diode that is otherwise needed for typical boost converters. This also allows for true shut down of the converter when device is disabled. Other features of the part; includes VID pin that allows smooth transition between 12V and 15V/15.5V output, input and output under voltage lock out, current limit and over temperature protection.
Features
- Wide Input voltage range: 3V to 6V
- Synchronous rectification
- Truly Shut Down
- Built-in Soft-Start
- Synchronization to External Clock
- VID Pin for Selecting Output Voltage
- Pull High: 15.5V (APW9100V)
- Pull Low: 12V
- Continuous Current-Mode Operation
- Fast Transient Response
- Built in OVP, UVP, Current Limit and OTP
- Available in a TDFN2x2-8C package
- Lead Free and Green Devices Available (RoHS Compliant)
General Description
The APW9100 is a 1.4MHz fixed frequency Synchronous Boost converter using a current mode architecture that allows for synchronizing the part to an external clock for noise sensitive applications such as DSL modems. The devices has built in Nch boost MOSFET as well as a Pch synchronous MOSFET acting as diode in the IC which eliminates an external Schotcky diode that is otherwise needed for typical boost converters. This also allows for true shut down of the converter when device is disabled. Other features of the part; includes VID pin that allows smooth transition between 12V and 15V/15.5V output, input and output under voltage lock out, current limit and over temperature protection.