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PDF AAT1299 Data sheet ( Hoja de datos )
| Número de pieza | AAT1299 | |
| Descripción | Low Voltage 2MHz Step-Up DC/DC Converter | |
| Fabricantes | Analogic | |
| Logotipo |  |
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AAT1299
Low Voltage 2MHz Step-Up DC/DC Converter
General Description
Features
SwitchReg™
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,
www.DataSheet4U.croipmple, 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.
• 200mA Output from a 1.8V Input
• VIN Operation Range: 1.0V to VOUT
• 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
Applications
• Bluetooth™ Headsets
• Digital Cameras
• Medical Instruments
• Mobile Handsets
• MP3 and Portable Music Players
Typical Application
VIN
2.2μH
4.7μF
AAT1299
LX VCC
VIN OUT
EN GND
VOUT
4.7μF
1299.2007.06.1.0
1
1 page  
AAT1299
Low Voltage 2MHz Step-Up DC/DC Converter
Typical Characteristics
Single-Cell to 3.3V Efficiency
100
90
80
70
www.DataSheet4U.com
60
50
0.1
VIN = 1.5V
VIN = 1.2V
1 10 100
Output Current (mA)
1000
Dual-Cell to 3.3V Efficiency
100
90
80
70
60
50
0.1
VIN = 3.0V
VIN = 2.4V VIN = 2.0V
1 10 100
Output Current (mA)
1000
2.0
1.5
1.0
0.5
0.0
-0.5
-1.0
-1.5
-2.0
0.1
Single-Cell Load Regulation
(VO = 3.3V)
VIN = 1.5V
VIN = 1.2V
1 10
Output Current (mA)
100
2.0
1.5
1.0
0.5
0.0
-0.5
-1.0
-1.5
-2.0
0.1
Dual-Cell Load Regulation
(VO = 3.3V)
VIN = 3.0V
VIN = 2.4V
VIN = 2.0V
1 10 100
Output Current (mA)
1000
Minimum Start-Up Voltage vs. Load Current
2.4
2.2
2.0 Constant Current Load
1.8
1.6
1.4 Resistive Load
1.2
1.0
0.8
0
2
40 60 80 100 120 140 160
Current (mA)
Light Load Mode Output Current
Threshold vs. Input Voltage
120
100
Increasing Load
80
60
40 Decreasing Load
20
0
1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0
Input Voltage (V)
1299.2007.06.1.0
5
5 Page 
AAT1299
Low Voltage 2MHz Step-Up DC/DC Converter
Manufacturer
Murata
www.murata.com
TDK
www.tdk.com
Taiyo Yuden
www.t-yuden.com
Value
4.7µF
4.7µF
4.7µF
Part
Output or Input Capacitor
Input Capacitor
Output or Input Capacitor
Input Capacitor
Output or Input Capacitor
Input Capacitor
Voltage
10V
6.3V
10V
6.3V
10V
6.3V
Case Size
0805
0603
0805
0603
0805
0603
Part Number
GRM21BR61A475KA73L
GRM188R60J475KE19D
C2012X5R1A475K
C1608X5ROJ475K
LMK212BJ475MG
JMK107BJ475MA
www.DataSheet4U.comManufacturer
Sumida
www.sumida.com
Cooper Electronics
www.cooperet.com
Value
2.2µH
2.2µH
Part
Inductor
Inductor
ISAT
1.50A
1.62A
DCR
75mΩ
69mΩ
Case Size
3.2 x 3.2 x 1.55
Part Number
CDRH2D14-2R2
3.1 x 3.1 x 1.85 SD3118-2R2
Table 1: Suggested Component Selection.
1299.2007.06.1.0
11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet AAT1299.PDF ] | |
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