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AP1605

Features: Low current consumption: In operation: 100µA max. Power off: 2µA max. Input voltage: 2.5V to 7V. Adjustable version (+2.5%) PWM/PFM dual Mode Oscillation frequency: 300KHz (Typ.) With a power-off function. Built-in internal SW P-channel MOS SOP-8L/TSSOP-8L Package. Applicatio...

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SeekIC No. : 004286197 Detail

AP1605: Features: Low current consumption: In operation: 100µA max. Power off: 2µA max. Input voltage: 2.5V to 7V. Adjustable version (+2.5%) PWM/PFM dual Mode Oscillation frequency: 300KHz (Typ...

AP1605 Data Sheet

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Part Number:
AP1605
Supply Ability:
5000

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  • 1~5000
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  • Processing time
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Product Details

Description



Features:

Low current consumption:
In operation: 100µA max.
Power off: 2µA max.
Input voltage: 2.5V to 7V. Adjustable version (+2.5%)
PWM/PFM dual Mode
Oscillation frequency: 300KHz (Typ.)
With a power-off function.
Built-in internal SW P-channel MOS
SOP-8L/TSSOP-8L Package.




Application

On-board power supplies of battery devices for portable telephones, electronic notebooks, PDA, and other hand-held sets.
Power supplies for audio equipment, including portable CD players and headphone stereo equipment.
Fixed voltage power supply for cameras, video equipment and communications equipment.
Power supplies for microcomputers.
Conversion from four Ni-H or Ni-Cd cells or two lithium-ion cells to 3.3V/3V.
Conversion of AC adapter input to 5V/3V.




Pinout

Connection Diagram




Specifications

Part Number AP1605
Efficiency (%) 93
Frequency (Hz) typ 300K Fixed
Min and Max Input Voltage (V) 2.5 ~ 7
Output Current (A) 3
Output Voltage (V) 2.2 to VccADJ
Standby Quiescent Current (uA) typ 2
Type Buck


Symbol Parameter Rating Unit
VCC
 VCC Pin Voltage VSS - 0.3 to VSS + 8 V
PVCC PVCC Pin Voltage VSS - 0.3 to VSS + 8 V
FB FB Pin Voltage VSS - 0.3 to VSS + 8 V
VCE ON/OFF Pin Voltage VSS - 0.3 to VSS + 8 V
VSW Switch Pin Voltage VSS - 0.3 to VIN + 0.3 V
PD Power Dissipation SOP-8L 1200 mW
TSSOP-8L 700
TOPR Operating Temperature Range -20 to +85 oC
TSTG Storage Temperature Range -20 to +125 oC





Description

AP1605 consists of CMOS step-down switching regulator with PWM/PFM dual mode control. These devices include a reference voltage source, oscillation circuit, error amplifier, internal PMOS and etc.

AP1605 provides low-ripple power, high efficiency, and excellent transient characteristics. The PWM/PFM control circuit is able to very the duty ratio linearly 0%~0.25% (PFM) and 25%~100% (PWM).

With the addition of an internal P-channel Power MOS, a coil, capacitors, and a diode connected externally, AP1605 can function as step-down switching regulators. They serve as ideal power supply units for portable devices when coupled with the SOP8L mini-package, providing such outstanding features as low current consumption. Since this converter can accommodate an input voltage of up to 7V, it is also ideal when operating via an AC adapter.






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