AP7335A
300mA, LOW QUIESCENT CURRENT, FAST TRANSIENT
LOW DROPOUT LINEAR REGULATOR
Description
The AP7335A is a 300mA, 5.0V fixed output voltage, low
dropout linear regulator with ±1% output voltage accuracy.
The device included pass element, error amplifier, band-gap,
current limit and thermal shutdown circuitry. The device is
turned on when EN pin is set to logic high level.
The characteristics of low dropout voltage and low quiescent
current make it suitable for low power applications, for
example, battery powered devices. The typical quiescent
current is 35μA. Built-in current-limit and thermal-shutdown
functions prevent IC from damage in fault conditions.
This device is only available as 5.0V fixed version. Please
contact your local sales office for any other voltage options.
The AP7335A is packaged in SOT25 and DFN2020-6.
Applications
• Smart Phones
• MP3/MP4
• Battery-powered devices
• Bluetooth headset
• Battery Charger
• LCD TV
• Multifunction Monitors
Pin Assignments
Features
• 300mA Low Dropout Regulator with EN
• Very low IQ 35µA
• Fixed output at 5.0V
o VIN MIN 5.5V
• High PSRR: 65dB at 1kHz
• Fast start-up time 220µs
• Stable with low ESR, 1µF ceramic output capacitor
• Excellent Load/Line Transient Response
• Low dropout 150mV at 300mA
• Current limit and short circuit protection
• Thermal shutdown protection
• Ambient temperature range -40ºC to 85°C
• SOT25, and DFN2020-6 Available in “Green” Molding
Compound (No Br, Sb)
• Lead Free Finish/ RoHS Compliant (Note 1)
Note: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html.
Typical Application Circuit
VIN
IN
OUT
AP7335
1uF
Enable EN
GND
VOUT
1uF
AP7335A
Document number: DS35267 Rev. 2 - 2
Fixed Output
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July 2011
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