AAT3125ISN-T1 Analogic Tech, AAT3125ISN-T1 Datasheet

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AAT3125ISN-T1

Manufacturer Part Number
AAT3125ISN-T1
Description
Switching Converters, Regulators & Controllers USB OTG 5V Charge Pump
Manufacturer
Analogic Tech
Datasheet

Specifications of AAT3125ISN-T1

Output Voltage
6 V (Max)
Output Current
100 mA
Input Voltage
2.9 V
Switching Frequency
750 KHz
Operating Temperature Range
- 40 C to + 85 C
Mounting Style
SMD/SMT
Package / Case
QFN44-16
Lead Free Status / Rohs Status
Lead free / RoHS Compliant

Available stocks

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Part Number:
AAT3125ISN-T1
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Part Number:
AAT3125ISN-T1
Manufacturer:
ANALOGIC
Quantity:
20 000
General Description
The AAT3125 USB On-the-Go (OTG) charge pump
is a member of AnalogicTech's Total Power
Management IC™ (TPMIC™) product family. The
device integrates a high efficiency 1.5X fractional
100mA regulated charge pump for supplying V
with the additional functions required for OTG
devices (formerly known as dual role devices).
Four voltage detectors monitor V
source dedicated for V
compliance with Session Request Protocol (SRP)
as defined by the USB OTG Supplement.
The charge pump section uses a high efficiency
fractional topology, with a high frequency 750kHz
switching speed which enables the use of small
capacitors (less than 3.3µF). The AAT3125 fea-
tures extremely low quiescent current to extend
battery run time. Additionally, the device integrates
protection features such as under-voltage lockout,
and output short circuit and thermal protection.
The AAT3125 is available in a Pb-free, surface
mount QFN44-16 package and is rated over the
-40°C to +85°C temperature range.
Typical Application
3125.2005.12.1.4
1 Cell
Li-Ion
C
1µF
BUS
IN
pulsing is provided for
SR
EN
BUS
, and a current
C1
C2
1µF
1µF
IN
C1+
C1-
C2+
C2-
SR
EN
AAT3125
GND
BUS
SESDET
OUTCP
SRRDY
POK1
POK2
OUT
Features
Applications
V
Regulated Fractional Charge Pump
100mA Output Current
Reverse Load Protection
Power Good Flag
SRP Detection Flag
SRP Ready Flag
Output Short-Circuit and Thermal Protection
Under-Voltage Protection
Less than 1µA Consumed While Disabled
Designed to Allow Operation with Output
Capacitance as Low as 3.3µF
16-pin QFN44 Package
-40°C to +85°C Temperature Range
Cell Phones
Hand-Held Computers
PDAs
IN
Range: 2.7V to 5.5V
C
R
0.2Ω
1µF
CP
USB OTG 5V Charge Pump
CS
R1
R2
80kΩ
R3
ChargePump
R4
C
VBUS
3.3µF to 6.5µF
SESDET
SRRDY
POK1
POK2
OUT
AAT3125
1

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AAT3125ISN-T1 Summary of contents

Page 1

General Description The AAT3125 USB On-the-Go (OTG) charge pump is a member of AnalogicTech's Total Power Management IC™ (TPMIC™) product family. The device integrates a high efficiency 1.5X fractional 100mA regulated charge pump for supplying V with the additional functions ...

Page 2

Pin Descriptions Pin # Symbol Function 1 POK1 Power OK 1. Open drain output with 4.0V voltage detector. When the OUT pin rises above the detected voltage (4.0V), POK1 will transition from low to high state. Similarly, when the output ...

Page 3

Absolute Maximum Ratings Symbol Description Any Pin to GND IN OUT t OUT Short-Circuit Duration Output Current OUT T Operating Temperature Range J T Storage Temperature Range S V ESD Rating 3 - HBM ...

Page 4

Electrical Characteristics V = 3.5V OUT 1 2 Unless otherwise noted, typical values are T Symbol Description Input Power Supply V Operating Range IN I Operating Current SRP cc3 I Operating ...

Page 5

Electrical Characteristics V = 3.5V OUT 1 2 Unless otherwise noted, typical values are T Symbol Description SESDET V SD Trip Threshold Hysteresis SD(HYS Output Voltage ...

Page 6

Typical Characteristics Unless otherwise noted 3.5V Charge Pump ON/OFF Timing OUT (1V/div) IIN (100mA/div) EN (1V/div) Time (2ms/div) Charge Pump Waveforms (100mA load) IN OUT Time (1µs/div) Charge Pump Output Voltage vs. Load Current 5.5 5.3 ...

Page 7

Typical Characteristics Unless otherwise noted 3.5V Operating Current vs. Input Voltage ( Charge Pump Mode) 1.200 1.000 0.800 0.600 0.400 0.200 0.000 Input Voltage (V) Shutdown Current ...

Page 8

Typical Characteristics Unless otherwise noted 3.5V Falling SESDET Timing OUT (5V/div) EN/SR (5V/div) SESDET (5V/div) Time (100ms/div) V Pulsing for SRP BUS Rise Time; 5µ µ BUS ...

Page 9

Functional Block Diagram IN SR Control UVLO EN OTMP Voltage Reference Functional Description Charge Pump The AAT3125 charge pump uses a 1.5X topology; the two flying capacitors are charged in series and discharged in parallel. Using this topology, output current ...

Page 10

OUT is above the SRRDY threshold or when logic low. Upon activation by EN, there is no negative glitch that can be mistaken for OUT below 0.8V. Power OK USB OTG devices connected as Host ...

Page 11

... XYY = assembly and date code. 2. Sample stock is generally held on part numbers listed in BOLD. 3125.2005.12.1.4 USB OTG 5V Charge Pump Marking 1 Part Number (Tape and Reel) ITXYY QFN44-16 0.330 ± 0.050 13 16 R0.030Max 2.280 REF Bottom View 0.203 ± 0.025 Side View AAT3125 2 AAT3125ISN-T1 Pin 1 Identification ...

Page 12

... 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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