AMS1318 AMS [Advanced Monolithic Systems Ltd], AMS1318 Datasheet

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AMS1318

Manufacturer Part Number
AMS1318
Description
Cellular and Smart Phones PDAs
Manufacturer
AMS [Advanced Monolithic Systems Ltd]
Datasheet
■ General Description
AMS1318 series
synchronous-rectification type buck regulator using a
constant frequency, current mode architecture. The device
is available in an adjustable version and fixed output
voltages of 1.8V and 3.3V. Automatic PWM/PFM mode
operation increases efficiency and decreases output
voltage ripple at light loads, further extending battery life.
Switching frequency is internally set at 1.4MHz, allowing
the use of small surface mount inductors and capacitors.
100% duty cycle provides low dropout operation.
■ Features
■ Typical Application Circuit
■ Ordering Information
AMS1318 ①②③④⑤
High Efficiency: 92%
Input Voltage Range: 2.0 ~ 6.0V
Output Current: 800mA
Shutdown Current: <1uA
Oscillation Frequency: 1.4MHz
Designator
is
a
1
2
group
Advanced Monolithic Systems http://www.ams-semitech.com
of
1
8
Symbol
M
high
S
R
F
3
3
efficiency
4
2
1
Output Voltage: 1.2V、1.8V、3.3V、4.2V
Adjustable version: ① ② fixed as 00
Oscillation Frequency 1.4MHz
Package Types: SOT-23-5
Embossed Tape :Standard Feed
Embossed Tape :Reverse Feed
■ Applications
■ Package
 SOT-23-5L
Cellular and Smart Phones
PDAs
MP3/MP4 Player
Digital Still and Video Cameras
Microprocessors and DSP Core Supplies
Portable Instruments
Description
FB/VOUT
AMS1318
CE
1
5
(Top View)
GND
2
VIN
LX
3
4

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AMS1318 Summary of contents

Page 1

... General Description AMS1318 series is a group of synchronous-rectification type buck regulator using a constant frequency, current mode architecture. The device is available in an adjustable version and fixed output voltages of 1.8V and 3.3V. Automatic PWM/PFM mode operation increases efficiency and decreases output voltage ripple at light loads, further extending battery life. ...

Page 2

... B C Eg: Represents AMS1318, external feedback mode, working mode is PWM/PFM Note: ①②③④⑤⑥ represent code point, represent production lot number. Advanced Monolithic Systems http://www.ams-semitech.com ...

Page 3

... Note: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Advanced Monolithic Systems http://www.ams-semitech.com Symbol Ratings V -0.3~6 -0.3~6.5 OUT V -0.3~VIN + 0 -0.3~VIN + 0.3 CE ±1000 250 D -40~+85 Topr -55~+125 Tstg 3 AMS1318 Units ℃ ...

Page 4

... Advanced Monolithic Systems http://www.ams-semitech.com Cinditons MIN - 0. =600mA MAX IL=300mA - VIN=2.7V;IL=100mA - 1.8 - VCE=0V、VIN=3.6V 0 - VFB=0.6V*0 VIN=3.6V、VOUT=1. 100 R1 C2 Iload Vin C3 4 AMS1318 (Ta=25℃, unless otherwise noted) Test TYP MAX Units Circuits 0.6 0. 0 - 1 200 - uA 3 1200 ...

Page 5

... Typical Performance Characteristics Output voltage vs output current Output voltage vs Temperature 3.3V Efficiency vs output current Advanced Monolithic Systems http://www.ams-semitech.com Input voltage vs output voltage 1.8V Efficiency vs output current 5 AMS1318 ...

Page 6

... Package Information  SOT-23-5L Advanced Monolithic Systems http://www.ams-semitech.com 6 AMS1318 ...

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