中文
EnglishThe APW7075 is a PWM/PFM, high-efficiency, and step- up DC-DC converter with an integrated LDO input switch for dual mode application
General Description
Built-In a 500mA LDO and Synchronous Step-Up
DC-DC Converter
Built-In PWM/PFM Operating Mode
Provided Dual Input Power Sources
Connect FB to OUT for 3.3V Output Voltage or
GND for 2.5V Output Voltage or an External
Resistor Divider for Adjustable Output Voltage.
Fixed 300kHz Operating Frequency
High Efficiency Up to 94% at 200mA Output
Current
0.6V to 4.5V Operating Voltage
1V Start-Up Input Voltage
Low Battery Voltage Detection
Reverse Voltage Protection
Internal Synchronous Rectifier
Automatic Detection Input Voltage
Compact SOP-8P and TSSOP-8 Packages
Lead Free and Green Devices Available
The APW7075 is a PWM/PFM, high-efficiency, and step-
up DC-DC converter with an integrated LDO input switch
for dual mode application. During battery mode operation,
the APW7075 acts as synchronous rectifier and step-up
DC-DC converter with a fixed or adjustable output voltage.
When the VIN pin sense 5V input voltage, the APW7075 is
switched to LDO operation mode, maintaining the con-
stant output voltage.
The input voltage ranges from 0.6 V to 4.5V for step-up
DC-DC converter. The start-up is guaranteed at 1V and
the device operates down to 0.6V. When the device is at
LDO operating mode, the suitable output voltage 3.3V
and loading current 500mA for maximum power con-
sumption are guaranteed.
The APW7075 is suited for dual mode and portable bat-
tery powered appliance with low-battery detector. In dual-
mode applications, the APW7075 draws power from any
available 5V USB connection and reverts to battery power
when the USB power is removed.
Part_No | Package & Pins | Topology | Architecture | Input Voltage (V) | Max Adj. Output Voltage(V) | Switch Current Limit (max)(A) | Fixed Output Voltage (V) | Switching Frequency (kHz) | Internal Power Switch | Sync. Rectifier | ||
min | max | min | max | |||||||||
APW7079 | SOT-89 | Boost | VM Hysteresis | 0.9 | 5.5 | 2.5 | 5.5 | 0.5 | 1.8 | - | No | Yes |
APW7078 | MSOP-8 | Boost | VM | 2.5 | 5.5 | 2.5 | - | - | - | 200 ~ 1000 | No | No |
APW7075 | TSSOP-8 | Boost | VM | 1 | 5.5 | 2.5 | 5 | 1 | 2.5 | 300 | Yes | Yes |
APW34063 | SOP-8 | Boost | CM | 3 | 40 | 1.25 | 40 | 1.5 | - | 33 ~ 100 | Yes | No |
APW7130/1/2 | TQFN5x5-32 | Boost | CM | 2.5 | 6.5 | 2.5 | 18 | 3 | No | 1200 | Yes | No |
APW7237 | TSOT-23-5 | Boost | CM | 2.5 | 6 | 2.5 | 20 | 2 | - | 1500 | Yes | No |
APW7277 | TQFN4x4-16 | Boost | CM | 1.8 | 5.5 | 2.7 | 5.5 | 5 | - | 1.2 | Yes | Yes |
APW7137 | SOT-23-5 | Boost | CM | 2.5 | 6 | 2.5 | 32 | 1 | - | 1000 | Yes | No |
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