AAT1265IJS-5.0-T1 ANALOGICTECH [Advanced Analogic Technologies], AAT1265IJS-5.0-T1 Datasheet

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AAT1265IJS-5.0-T1

Manufacturer Part Number
AAT1265IJS-5.0-T1
Description
Low Voltage 2MHz Step-Up DC/DC Converter in SC70JW Package
Manufacturer
ANALOGICTECH [Advanced Analogic Technologies]
Datasheet
1.AAT1265IJS-5.0-T1.pdf (13 pages)

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
H&T Electronics H&T Electronics
Part Number:
AAT1265IJS-5.0-T1
Quantity:
1 300
General Description
The AAT1265 is designed for single-cell or dual-cell alka-
line, NiMH, or NiCd or single-cell lithium-ion/polymer
(Li-Ion) battery-powered applications. It is a high effi-
ciency, synchronous, fixed frequency, step-up converter
with true output disconnect during shutdown (<1.0μA),
start-up inrush current limit, and short-circuit protection.
The high 2MHz switching frequency and completely inte-
grated control circuitry minimize the total solution foot-
print area while maintaining excellent regulation, ripple,
and transient response throughout the full load range.
Light load switching frequency modulation and low qui-
escent current maintain high efficiency performance for
light load and sleep mode conditions.
With a 1A peak switch current limit, the AAT1265 is
capable of delivering 100mA to the load with a single AA
cell, up to 250mA from a dual AA cell, or up to 400mA
from a single-cell lithium-ion battery. The device has a
1.0V start-up voltage with operation down to 0.8V.
The AAT1265 is available in a Pb-free, space-saving
2.0x2.1mm 8-pin SC70JW package and is rated over the
-40°C to +85°C temperature range.
Typical Application
SwitchReg
1265.2007.12.1.4
V
IN
4.7μF
2.2μH
TM
LX
VIN
EN
AAT1265
Low Voltage 2MHz Step-Up DC/DC Converter in SC70JW Package
GND
OUT
VCC
V
OUT
w w w . a n a l o g i c t e c h . c o m
4.7μF
Features
• 100mA Output from a Single AA Cell Input
• 250mA Output from a Dual AA Cell Input
• 400mA Output from a Single Lithium-Ion Cell Input
• V
• Up to 93% Efficiency
• Low Start-Up Voltage: 1.0V Typical
• Internal Synchronous Rectifier
• Current Mode Control with Internal Feedback and
• 2MHz Fixed Switching Frequency
• 1A Current Limit
• Maintains High Efficiency Over the Output Current
• Low 40μA No Load Bias Current
• True Load Disconnect
• Short-Circuit and Over-Current Protection
• Inrush Current Limit and Soft Start
• Low Shutdown Current: <1.0μA
• -40°C to +85°C Temperature Range
• 2.0x2.1mm SC70JW-8 Package
Applications
• Bluetooth
• Digital Cameras
• Medical Instruments
• Mobile Handsets
• MP3 and Portable Music Players
Compensation
Range for Improved Battery Life
IN
Operation Range: 0.8V to V
100
90
80
70
60
50
0.1
®
Headsets
V
Dual-Cell to 3.3V Efficiency
IN
= 3.0V
1.0
PRODUCT DATASHEET
vs. Output Current
V
Output Current (mA)
IN
= 2.4V
AAT1265
10.0
OUT
V
IN
= 2.0V
100.0
1000.0
1

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AAT1265IJS-5.0-T1 Summary of contents

Page 1

SwitchReg Low Voltage 2MHz Step-Up DC/DC Converter in SC70JW Package TM General Description The AAT1265 is designed for single-cell or dual-cell alka- line, NiMH, or NiCd or single-cell lithium-ion/polymer (Li-Ion) battery-powered applications high effi- ciency, synchronous, fixed ...

Page 2

SwitchReg SwitchReg Low Voltage 2MHz Step-Up DC/DC Converter in SC70JW Package Low Voltage 2MHz Step-Up DC/DC Converter in SC70JW Package TM TM Pin Descriptions Pin # Symbol Function 1 VCC Bias supply voltage after start-up and feedback to the output ...

Page 3

SwitchReg SwitchReg Low Voltage 2MHz Step-Up DC/DC Converter in SC70JW Package Low Voltage 2MHz Step-Up DC/DC Converter in SC70JW Package TM TM Absolute Maximum Ratings Symbol Description V VIN, OUT, VCC, EN GND N T Operating Junction Temperature ...

Page 4

SwitchReg SwitchReg Low Voltage 2MHz Step-Up DC/DC Converter in SC70JW Package Low Voltage 2MHz Step-Up DC/DC Converter in SC70JW Package TM TM Electrical Characteristics V = 1.2V -40°C to +85°C, unless otherwise noted. Typical values are T IN ...

Page 5

SwitchReg SwitchReg Low Voltage 2MHz Step-Up DC/DC Converter in SC70JW Package Low Voltage 2MHz Step-Up DC/DC Converter in SC70JW Package TM TM Typical Characteristics Single-Cell to 3.3V Efficiency 100 1. 1.2V IN ...

Page 6

SwitchReg SwitchReg Low Voltage 2MHz Step-Up DC/DC Converter in SC70JW Package Low Voltage 2MHz Step-Up DC/DC Converter in SC70JW Package TM TM Typical Characteristics 3. Efficiency 100 0 Output Current (mA) Minimum ...

Page 7

SwitchReg SwitchReg Low Voltage 2MHz Step-Up DC/DC Converter in SC70JW Package Low Voltage 2MHz Step-Up DC/DC Converter in SC70JW Package TM TM Typical Characteristics Switching Frequency vs. Temperature 0.5 0.0 -0.5 -1.0 -1.5 -2.0 -2.5 -40 - Temperature ...

Page 8

SwitchReg SwitchReg Low Voltage 2MHz Step-Up DC/DC Converter in SC70JW Package Low Voltage 2MHz Step-Up DC/DC Converter in SC70JW Package TM TM Typical Characteristics Soft-Start Inrush Current (V = 1.2V 40mA 3.3V) IN OUT OUT 4 ...

Page 9

SwitchReg Low Voltage 2MHz Step-Up DC/DC Converter in SC70JW Package TM Functional Block Diagram VCC Voltage Reference GND Functional Description The AAT1265 synchronous step-up converter is targeted for single- or dual-cell alkaline, NiMH, and NiCd and single-cell lithium-ion/polymer battery applications. ...

Page 10

SwitchReg Low Voltage 2MHz Step-Up DC/DC Converter in SC70JW Package TM frequency (Light Load) mode to reduce the dominant switching losses. In addition to Light Load operation, a zero current comparator blocks reverse current in the P-channel synchronous MOSFET, forcing ...

Page 11

SwitchReg SwitchReg Low Voltage 2MHz Step-Up DC/DC Converter in SC70JW Package Low Voltage 2MHz Step-Up DC/DC Converter in SC70JW Package TM TM Figure 1: AAT1265 Evaluation Board Top Side. 1265.2007.12.1.4 1265.2007.12.1.4 Figure 2: Component Placement. Figure 3: AAT1265 Evaluation Board ...

Page 12

SwitchReg SwitchReg Low Voltage 2MHz Step-Up DC/DC Converter in SC70JW Package Low Voltage 2MHz Step-Up DC/DC Converter in SC70JW Package TM TM Figure 4: AAT1265 Evaluation Board Schematic. Manufacturer Value Part Output or Input Capacitor Murata 4.7μF www.murata.com Input Capacitor ...

Page 13

... SC70JW-8 0.225 ± 0.075 2.00 ± 0.20 0.100 0.45 ± 0. PRODUCT DATASHEET PRODUCT DATASHEET AAT1265 AAT1265 2 AAT1265IJS-3.0-T1 AAT1265IJS-3.3-T1 AAT1265IJS-3.6-T1 AAT1265IJS-5.0-T1 0.048REF 4° ± 4° 2.10 ± 0. ...

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