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AAT1105A PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 AAT1105A
기능 BUCK BOOST AND BOOST PWM CONTROLLER
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AAT1105A 데이터시트, 핀배열, 회로
Advanced Analog Technology, Inc.
AAT1105A
Details are subject to change without notice.
BUCK_BOOST & BOOST PWM CONTROLLER
Features
www.DataShzeet4UC.coomm plete 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 VDD Range: 2.6V~6.5V
Pin Configuration
TOP VIEW
Ct
Rt
SHDN
IE1
OE1
1
2
3
4
5
16 VREF
15 SCP
14 PGO
13 IE2
12 OE2
DTC1 6
11 DTC2
OUT1
GND
7
8
10 OUT2
9 VDD
(TSSOP-16 PACKAGE)
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.
––
Advanced Analog Technology, Inc.
Page 1 of 16
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AAT1105A pdf, 반도체, 판매, 대치품
Advanced Analog Technology, Inc.
AAT1105A
Electrical Characteristics, VDD = 3.3V (Unless Otherwise Specified) (See Note 1)
Oscillator
Parameter
Test Condition
Min Typ
Frequency
f OSC
COSC = 220pF, R OSC =
5.6k
320 400
www.DataSheet4U.com
Frequency
VDD
Changes
with
f V
VDD = 2.6V to 6.0V,
TC = 25 oC
COSC = 220pF,
R OSC = 5.6k
-1
Max Unit
480 kHz
-%
Under-Voltage Protection
Parameter
Upper Threshold Voltage
Lower Threshold Voltage
Hysteresis ( VUPH – VUPL )
VUPH
VUPL
VHYS
Test Condition
TC = 25 oC
TC = 25 oC
TC = 25 oC
Min Typ Max Unit
1.81 2.03 2.25 V
1.57 1.79 2.01 V
- 0.24 - V
Short Circuit Protection Control
Parameter
Input Threshold Voltage
Vr 2
Input Threshold Voltage
Short-Circuit Detect
Threshold Voltage
SCP Terminal Source
Current
Stand-by Voltage
Latch Voltage
Vr1
Vtscd
ISCP
VSTB
VLT
Test Condition
CH2
CH1
Min Typ Max Unit
1.81 1.29 1.40 V
0.30 0.37 0.44 V
0.76 0.85 0.94 V
3.8 2.6 1.4 µA
50 100 mV
30 100 mV
Shutdown Control
Parameter
Shutdown Enable Voltage
Shutdown Release Voltage
Test Condition
VSE TC = 25 oC
VSR TC = 25 oC
Note 1: Typical values of all parameters are specified at TC =25 oC.
Min Typ Max Unit
- - 0.5 V
2.0 -
-V
––
Advanced Analog Technology, Inc.
Page 4 of 16
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AAT1105A 전자부품, 판매, 대치품
Block Diagram
Advanced Analog Technology, Inc.
AAT1105A
OE1
IE1
www.DataSheet4U.com
VREFi
1.233V
GND
Err-Amp
Vr1
Vr2
VREFi
1.233V
IE2
OE2
DTC1
Err-Amp
VREF
UVC
SCP
Comp
DTC2
UVC
SCP
VDD
LATCH
SCP
UVC
SHDN
SHUTDOWN
CONTROL
PWM
VDD
OUT1
UVC
VDD
OUT2
PWM
OSC
Ct
Rt
LATCH
UVC
UVLO
VDD
PGO
VREF
VREF
VREF
––
Advanced Analog Technology, Inc.
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부품번호상세설명 및 기능제조사
AAT1105A

BUCK BOOST AND BOOST PWM CONTROLLER

Advanced Analog Technology
Advanced Analog Technology

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