AAT3111IGU-3.3-T1 Advanced Analogic Technologies, Inc., AAT3111IGU-3.3-T1 Datasheet

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AAT3111IGU-3.3-T1

Manufacturer Part Number
AAT3111IGU-3.3-T1
Description
Manufacturer
Advanced Analogic Technologies, Inc.
Datasheet

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Part Number:
AAT3111IGU-3.3-T1
Manufacturer:
ANALOGIC
Quantity:
20 000
General Description
The AAT3111 ChargePump is a MicroPower
switched capacitor voltage converter that delivers a
regulated output. No external inductor is required
for operation. Using three small capacitors, the
AAT3111 can deliver up to 150mA to the voltage
regulated output. The AAT3111 features very low
quiescent current and high efficiency over a large
portion of its load range, making this device ideal
for battery-powered applications. Furthermore, the
combination of few external components and small
package size keeps the total converter board area
to a minimum in space-restricted applications.
The AAT3111 operates in an output-regulated volt-
age doubling mode. The regulator uses a pulse-
skipping technique to provide a regulated output
from a varying input supply. The AAT3111 contains
a thermal management circuit to protect the device
under continuous output short-circuit conditions.
The AAT3111 is available in a Pb-free, surface-
mount 6-pin SOT23 or 8-pin SC70JW package and
is rated over the -40°C to +85°C temperature
range.
Typical Application
3111.2006.06.1.3
V
OUT
ON/OFF
10uF
C
OUT
VOUT
GND
SHDN
AAT3111
MicroPower™ Regulated Charge Pump
VIN
C+
Features
Applications
C-
Step-Up Type Voltage Converter
Input Voltage Range:
— AAT3111-3.6: 1.8V to 3.6V
— AAT3111-3.3: 1.8V to 3.3V
MicroPower Consumption: 20µA
3.6V, 3.3V Regulated ±4% Output
3.6V Output Current
— 100mA with V
— 20mA with V
3.3V Output Current
— 100mA with V
— 20mA with V
High Frequency 750kHz Operation
Shutdown Mode Draws Less Than 1µA
Short-Circuit/Over-Temperature Protection
2kV ESD Rating
SC70JW-8 or SOT23-6 Package
Battery Back-Up Supplies
Digital Cameras
Handheld Electronics
MP3 Players
PDAs
1uF
10uF
C
IN
IN
IN
IN
IN
ChargePump
SmartSwitch
2.0V
1.8V
3.0V
2.5V
V
IN
AAT3111
1

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AAT3111IGU-3.3-T1 Summary of contents

Page 1

General Description The AAT3111 ChargePump is a MicroPower switched capacitor voltage converter that delivers a regulated output. No external inductor is required for operation. Using three small capacitors, the AAT3111 can deliver up to 150mA to the voltage regulated output. ...

Page 2

Pin Descriptions Pin # SOT23-6 SC70JW Pin Configuration VOUT 1 GND 2 SHDN 3 2 MicroPower™ Regulated Charge Pump Symbol Function VOUT Regulated output pin. Bypass ...

Page 3

Absolute Maximum Ratings T = 25°C, unless otherwise noted. A Symbol Description V VIN to GND IN V VOUT to GND OUT V SHDN to GND SHDN t Output to GND Short-Circuit Duration SC T Operating Junction Temperature Range J ...

Page 4

Electrical Characteristics T = -40°C to +85°C, unless otherwise noted. Typical values are 10µF. OUT Symbol Description AAT3111-3.3 V Input Voltage Load Supply Current Q V Output Voltage OUT I Shutdown Supply Current ...

Page 5

Typical Characteristics — AAT3111-3.3 Unless otherwise noted 3V Output Voltage vs. Output Current 3. 2. 1.7V IN 3.20 0.01 0 Output ...

Page 6

Typical Characteristics — AAT3111-3.3 Unless otherwise noted 3V Load Transient Response (V = 2.0V OUT (20mA/div) V OUT AC Coupled (20mV/div) Time (50 s/div) Output Ripple (I = 50mA; V OUT Time (2 s/div) ...

Page 7

Typical Characteristics — AAT3111-3.6 Unless otherwise noted 3V Output Voltage vs. Output Current 3.75 3.70 3.65 3.60 3. 2.0V IN 3.50 3.45 0.01 0 Output Current (mA) Efficiency vs. Supply Voltage 100 ...

Page 8

Typical Characteristics — AAT3111-3.6 Unless otherwise noted 3V Load Transient Response (V = 2.1V OUT (20mA/div) V OUT AC Coupled (20mV/div) Time (50 s/div) Output Ripple (I = 50mA 2.5V) OUT IN ...

Page 9

Functional Block Diagram V IN SHDN Functional Description Operation (Refer to block diagram) The AAT3111 uses a switched capacitor charge pump to boost an input voltage to a regulated output voltage. Regulation is achieved by sensing the charge pump output ...

Page 10

External Capacitor Selection Careful selection of the three external capacitors and C is very important because they IN OUT FLY will affect turn-on time, output ripple, and transient performance. Optimum performance will be obtained when low ...

Page 11

Charge Pump Efficiency The AAT3111 is a regulated output voltage dou- bling charge pump. The efficiency ( ) can simply be defined as a linear voltage regulator with an effective output voltage that is equal to two times the input ...

Page 12

There are several methods that can be employed to reduce output ripple depending upon the require- ments of a given application. The most simple and straightforward technique is to increase the value of the C capacitor. The nominal 10µF C ...

Page 13

Figure 3: Evaluation Board Top Side Silk Screen Layout / Assembly Drawing. Typical Application Circuit V OUT ON/OFF Figure 6: Typical Charge Pump Boost Converter Circuit. 3111.2006.06.1.3 MicroPower™ Regulated Charge Pump Figure 4: Evaluation Board Component Side Layout. VOUT C+ ...

Page 14

... XYY = assembly and date code. 2. Sample stock is generally held on part numbers listed in BOLD. 14 MicroPower™ Regulated Charge Pump Marking Part Number (Tape and Reel) 1 BPXYY AAT3111IGU-3.3-T1 BOXYY AAT3111IGU-3.6-T1 BPXYY AAT3111IJS-3.3-T1 BOXYY AAT3111IJS-3.6-T1 AAT3111 2 3111.2006.06.1.3 ...

Page 15

Package Information 0.15 2.85 1.90 BSC 0.95 BSC 10 5 0.50 BSC 0.50 BSC 0.50 BSC 2. All dimensions in millimeters. 3111.2006.06.1.3 MicroPower™ Regulated Charge Pump SOT23-6 0.60 REF 0.40 0.10 6 SC70JW-8 0.225 0.075 0.20 0.100 0.45 ...

Page 16

... Advanced Analogic Technologies, Inc. AnalogicTech cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in an AnalogicTech product. No circuit patent licenses, copyrights, mask work rights, or other intellectual property rights are implied. AnalogicTech reserves the right to make changes to their products or specifications or to discontinue any product or service without notice. ...

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