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AX3700 Datasheet Preview

AX3700 Datasheet

VFB=0.6V Synchronous Step-Down Converter

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AX3700
1.4MHz, 600mA, VFB=0.6V Synchronous
Step-Down Converter
GENERAL DESCRIPTION
AX3700 is a high efficiency monolithic synchronous buck regulator using a constant
frequency, current mode architecture. The device is available in an adjustable version.
Supply current with no load is about 200uA and drops to <1uA in shutdown. The 2.5V to
7.5V input voltage range makes AX3700 ideally suited for single Li-Ion, two to four AA
battery-powered applications. 100% duty cycle provides low dropout operation, extending
battery life in portable systems. Pulse skipping mode operation provides very low output
ripple voltage for noise sensitive applications. Switching frequency is internally set at
1.4MHz, allowing the use of small surface mount inductors and capacitors. The internal
synchronous switch increases efficiency and decreases need of an external Schottky diode.
Low output voltages are easily supported with the 0.6V feedback reference voltage. AX3700
is available in small SOT-23-5LTSOT-23-5L and TDFN-6L (2*2) packages.
FEATURES
- 2.5V to 7.5V Input Voltage Range
- Output Voltage from 0.6V to VIN
- High Efficiency: Up to 92%
- 1.4MHz Constant Frequency Operation
- 600mA Output Current
- Quiescent Current: 200uA (input < 4.2V)
- No Schottky Diode Required
- 100% Duty Cycle in Dropout
- 0.6V Reference Allows Low Output Voltages
- Current Mode Operation for Excellent Line and Load Transient Response
- Current limit, Enable function
- Short Circuit Protect (SCP)
- 1µA Shutdown Current
- SOT-23-5LTSOT-23-5L and TDFN-6L (2*2) Pb-Free packages
1/14
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev1.0 Feb.17, 2014




AXElite

AX3700 Datasheet Preview

AX3700 Datasheet

VFB=0.6V Synchronous Step-Down Converter

No Preview Available !

BLOCK DIAGRAM
AX3700
2/14
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev1.0 Feb.17, 2014


Part Number AX3700
Description VFB=0.6V Synchronous Step-Down Converter
Maker AXElite
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AX3700 Datasheet PDF






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