參數(shù)資料
型號: AAT1105A-T1
廠商: Advanced Analog Technology,lnc.
英文描述: BUCK_BOOST AND BOOST PWM CONTROLLER
中文描述: BUCK_BOOST和提高的PWM控制器
文件頁數(shù): 1/16頁
文件大?。?/td> 224K
代理商: AAT1105A-T1
Advanced Analog Technology, Inc.
Advanced Analog Technology, Inc
.
Page 1 of 16 V 1.0
AAT1105A
Details are subject to change without notice.
BUCK_BOOST & BOOST PWM CONTROLLER
Features
z
Complete PWM Power Control Circuitry
CH1: Buck_Boost, CH2: Boost
z
Under-Voltage Lockout (UVLO) Protection
z
Totem Pole Output
z
Output Short Circuit Protection
z
Dead-Time Control
0% to 100%
z
Wide Operating Frequency
10kHz to 800kHz
z
Shutdown Control
z
Power Good Protection
z
DD
V
Range: 2.6V~6.5V
Pin Configuration
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
C
t
R
t
IE1
OE1
DTC1
GND
OUT1
V
REF
PGO
SCP
IE2
OE2
DTC2
OUT2
TOP VIEW
(TSSOP-16 PACKAGE)
SHDN
V
DD
General Description
The AAT1105A provides an integrated two-channel
pulse-width-modulation (PWM) solution for the
power supply of DC-DC system. This device
offers system engineers the flexibility to tailor-make
the power supply circuitry for specific applications.
Each channel contains its own error amplifier,
PWM comparator, dead–time control (DTC), and
output driver. The under-voltage protection,
oscillator, short circuit protection (SCP) and voltage
reference circuit are the common features for the
two channels.
The AAT1105A contains one step-up (boost) circuit
at channel two (CH2) and one inverting
(buck_boost) circuit at channel one (CH1).
Dead-time control can be set to provide 0% to
100% dead-time through a resistive divider network.
Soft-start can be implemented by paralleling the
DTC resistor with a capacitor. Two dead-time
control inputs are assigned for CH1 and CH2
individually, and dead-time control inputs can be
used to control on / off operation.
The compact design and optimized external parts of
AAT1105A offers a simple and effective solution.
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