AAT1299IJS-3.3-T1 Analog Devices, AAT1299IJS-3.3-T1 Datasheet

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AAT1299IJS-3.3-T1

Manufacturer Part Number
AAT1299IJS-3.3-T1
Description
Low Voltage 2MHz Step-Up DC/DC Converter
Manufacturer
Analog Devices
Datasheet
General Description
The AAT1299 is a high efficiency, synchronous,
fixed frequency, step-up converter with start-up
inrush current limit and short-circuit protection. The
input voltage ranges from 1.0V to the output voltage.
The high 2MHz switching frequency and completely
integrated control circuitry minimize the total solution
footprint area while maintaining excellent regulation,
ripple, and transient response throughout the full
load range.
Light load switching frequency modulation and low
quiescent current maintain high efficiency perform-
ance for light load and sleep mode conditions.
With a 1A peak switch current limit, the AAT1299 is
capable of delivering 200mA to the load from a
1.8V input.
The AAT1299 is available in a Pb-free, space-sav-
ing 2.0x2.1mm 8-pin SC70JW or 2.2x2.2mm 10-
pin STDFN package, or in die form and is rated
over the -40°C to +85°C temperature range.
Typical Application
1299.2007.06.1.0
V
IN
4.7μF
2.2μH
Low Voltage 2MHz Step-Up DC/DC Converter
LX
VIN
EN
AAT1299
GND
VCC
OUT
Features
Applications
200mA Output from a 1.8V Input
V
Up to 93% Efficiency
Low Start-Up Voltage: 1.0V Typical
Internal Synchronous Rectifier
Current Mode Control with Internal Feedback
and Compensation
2MHz Fixed Switching Frequency
1A Current Limit
Maintains High Efficiency Over the Output
Current Range for Improved Battery Life
Low 40µA No Load Bias Current
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 or 2.2x2.2mm 10-pin
STDFN Package or Die
Bluetooth™ Headsets
Digital Cameras
Medical Instruments
Mobile Handsets
MP3 and Portable Music Players
IN
Operation Range: 1.0V to V
V
OUT
4.7μF
SwitchReg
AAT1299
OUT
1

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AAT1299IJS-3.3-T1 Summary of contents

Page 1

General Description The AAT1299 is a high efficiency, synchronous, fixed frequency, step-up converter with start-up inrush current limit and short-circuit protection. The input voltage ranges from 1.0V to the output voltage. The high 2MHz switching frequency and completely integrated control ...

Page 2

Pin Descriptions Pin # Symbol SC70JW-8 STDFN- VCC VIN OUT GND N N/C N/A EP Pin Configuration SC70JW-8 (Top View) ...

Page 3

Absolute Maximum Ratings Symbol Description V VIN, OUT, VCC GND GND EN T Operating Junction Temperature Range J T Maximum Soldering Temperature (at leads, 10 sec) LEAD Thermal Characteristics Symbol Description θ Thermal Resistance ...

Page 4

Electrical Characteristics V = 1.8V -40°C to +85°C, unless otherwise noted. Typical values are Symbol Description Minimum Start-Up Voltage V IN Operating Input Voltage Range V Output Voltage Accuracy OUT Quiescent Supply Current I Q ...

Page 5

Typical Characteristics Single-Cell to 3.3V Efficiency 100 Output Current (mA) Single-Cell Load Regulation (V = 3.3V) O 2.0 1.5 1.0 0.5 0 ...

Page 6

Typical Characteristics No Load Input Current vs. Input Voltage 200 160 120 0.8 1.0 1.2 1.4 1.6 1.8 2.0 Input Voltage (V) Maximum Load Current Capacity for a 4% Drop in Output Voltage vs. Input Voltage (V ...

Page 7

Typical Characteristics Soft-Start Inrush Current (V = 1.2V 40mA Output Voltage Input Current - Time (500µs/div) Full Load Output Ripple (V = 1.2V; 100mA Load ...

Page 8

Functional Block Diagram VCC Voltage Reference GND Functional Description The AAT1299 synchronous step-up converter is targeted for single- or dual-cell alkaline, NiMH, and NiCd battery applications. It has a 1V typical start- up voltage. The high 2MHz switching frequency of ...

Page 9

PWM / Light Load Control The AAT1299 is a fixed frequency PWM peak cur- rent mode control step-up converter. For light load conditions (10 to 20mA and below), the converter transitions to a light load mode to reduce the dom- ...

Page 10

Figure 1: AAT1299 Evaluation Board Top Side. Enable Figure 4: AAT1299 Evaluation Board Schematic. 10 Low Voltage 2MHz Step-Up DC/DC Converter Figure 3: AAT1299 Evaluation Board Bottom Side AAT1299 1 8 VCC GND ...

Page 11

Manufacturer Value Murata 4.7µF www.murata.com TDK 4.7µF www.tdk.com Taiyo Yuden 4.7µF www.t-yuden.com Manufacturer Value Sumida 2.2µH www.sumida.com Cooper Electronics 2.2µH www.cooperet.com Table 1: Suggested Component Selection. 1299.2007.06.1.0 Low Voltage 2MHz Step-Up DC/DC Converter Part Voltage Output or Input Capacitor 10V ...

Page 12

... A solder fillet at the exposed copper edge cannot be guaranteed and is not required to ensure a proper bottom solder connection. 12 Low Voltage 2MHz Step-Up DC/DC Converter Marking 1 Part Number (Tape and Reel) YRXYY YQXYY AAT1299 SC70JW-8 0.225 ± 0.075 0.100 0.45 ± 0.10 2.10 ± 0.30 AAT1299 2 AAT1299IJS-3.3-T1 AAT1299IOQ-3.3-T1 AAT1299IZZ-3.3 0.048REF 4° ± 4° 1299.2007.06.1.0 ...

Page 13

Index Area Top View 0.025 ± 0.025 Side View Please contact your local AnalogicTech Sales representative. 1299.2007.06.1.0 Low Voltage 2MHz Step-Up DC/DC Converter STDFN-10 1.000 ± 0.050 Bottom View Pin 1 Indicator (optional) R0.200 Detail "A" Die ...

Page 14

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 ...

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