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PDF AIC1562CS Data sheet ( Hoja de datos )
| Número de pieza | AIC1562CS | |
| Descripción | High-Efficiency/ Bootstrapped DC/DC Converter | |
| Fabricantes | Analog Intergrations Corporation | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AIC1562CS (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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AIC1562
High-Efficiency, Bootstrapped DC/DC Converter
FEATURES
3V to 20V Input Voltage Operation.
Internal 800mA Switch.
Bootstrapped Driver for N-Channel MOSFET.
High Efficiency (up to 90%).
Fast Transient Response.
Internal ±2% Reference.
Low Quiescent Current at 1.6mA.
Frequency Operation from 200Hz to 200KHz.
APPLICATIONS
CPU Power Supplies for Mother Boards.
DC/DC Converters for CPU VRMs.
Step-Down DC-DC Converter Module.
DESCRIPTION
The AIC1562 is a high performance monolithic
DC/DC converter drive IC with output-
bootstrapping capability, designed specifically for
driving N-channel MOSFET to achieve maximum
possible power conversion efficiency. The device
consists of an internal temperature compensated
reference, comparator, controlled duty cycle
oscillator, bootstrapped driver and a 800mA output
switch. Working with the AIC1741, a low power
adjustable regulator, the AIC1562 works at 100%
duty cycle under heavy load transient conditions to
minimize transient response time, making it an idea
precision switching power solution to stringent
requirements on computer mother boards.
TYPICAL APPLICATION CIRCUIT
12V
+
C1
47µF
D2
1N4148
0.1µF
SC
BST SE
AIC1562
VCC TC
FB GND
C3
1N4148
D3
Q2
R1
1K
0.022µF
R2 C4
24K
C2
220pF
Z1
5.1V
VIN 5V
+ 1000µF/6.3Vx2
C8, C9
L1
7.5µF
+
VOUT : 2.5V~3.5V/10A
D1
C10 C11 C12
0.1µF
x2
0.1µF
x2
1000µF/6.3V
x5 +
C13
R8
10K
C11, C12: Ceramic Capacitor
L1: Iron Powder Core
VOUT= (1+R10/1K)x1.235V
VIN FB
GND VOUT
AIC1741
R7 C5 R8
470 0.1µF 1K
R10
R9
1K
CPU Power Supply for P5 Mother Board
P5
MICROPROCESSOR
CPU
Analog Integrations Corporation 4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
DS-1562-00 Jan 30, 01
TEL: 886-3-5772500 FAX: 886-3-5772510
www.analog.com.tw
1
1 page  
AIC1562
TYPICAL PERFORMANCE CHARACTERISTICS
Output Switch ON-OFF Time vs. Oscillator Timing
Capacitor
VCC=5V
VIPK=VCC
PIN 5=GND
ON TIME
OFF TIME
0.1 1
10 100
CT, Oscillator Timing Capacitor (nF)
Standby Supply Current vs. Supply Voltage
2
1.8
CT=1nF
1.2
VIS=VCC
PIN 2=GND
0.8
0.4
0 0 5 10 15 20
VCC, Supply Voltage (V)
VFB, Threshold Voltage vs Temperature
1.3
VCC=5V
1.28
CT=1nF
PIN 2=GND
1.26
1.24
1.22
1.2
0 10 20 30 40 50 60 70 80
Temperature (°C)
Emitter Follower Configuration Output Switch
Saturation Voltage vs. Emitter Current
1.8
VCC=5V
PIN 1, 7, 8= VCC
PIN 3, 5= GND
1.6
1.4
1.2
0 0.2 0.4 0.6 0.8 1
IE, Emitter Current Current (A)
Common Emitter Configuration Output Switch
Saturation Voltage vs. Collector Current
0.6
VCC=5V
PIN 7=VCC
PIN 2, 3, 5=GND
0.4
0.2
00
Forced Beta = 20
0.2 0.4 0.6
Temperature (°C)
0.8
1
5
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet AIC1562CS.PDF ] | |
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