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AAT1107 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 AAT1107
기능 BUCK BOOST & BOOST PWM CONTROLLER
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AAT1107 데이터시트, 핀배열, 회로
Advanced Analog Technology, Inc.
Details are subject to change without notice.
AAT1107
BUCK_BOOST & BOOST PWM CONTROLLER
WITH ADJUSTABLE LDO
www.DataShFeEet4AU.cTomURES
z Complete PWM Power Control Circuitry
CH1: Buck_Boost, CH2: Boost
z Adjustable Low Dropout (LDO) Regulator
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
PIN CONFIGURATION
TOP VIEW
Ct 1
Rt 2
16 VREF
15 SCP
IE3 3
14 OUT3
IE1 4
13 IE2
OE1 5
12 OE2
DTC1
OUT1
GND
6 11
7 10
89
TSSOP-16 PACKAGE
DTC2
OUT2
VDD
GENERAL DESCRIPTION
The AAT1107 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 the specific
applications.
Each channel contains its own error amplifier,
PWM comparator, dead-time control (DTC) and
output driver. The two channels share common
features of under-voltage protection, oscillator,
short circuit protection and voltage reference circuit.
Two dead-time control inputs are assigned for
channel (CH1) and channel 2 (CH2) individually,
and dead-time control inputs can be used to control
on/off operation.
The AAT1107 contains one step-up (boost) circuit
at CH2 and one inverting (buck_boost) circuit at
CH1. In addition, DTC can be set to provide 0%
to 100% dead-time through a resistive divider
network and soft-start can be implemented by
paralleling the DTC resistor with a capacitor.
The Maximum output current of LDO regulator can
be enlarged by connecting an nMOSFET (or NPN
bipolar) as a source follower stage at OUT3 pin.
––
Advanced Analog Technology, Inc.
Page 1 of 16
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AAT1107 pdf, 반도체, 판매, 대치품
Advanced Analog Technology, Inc.
AAT1107
ELECTRICAL CHARACTERISTICS, VDD = 5.0V (UNLESS OTHERWISE
SPECIFIED) (SEE NOTE 1)
Oscillator
Parameter
Frequency
www.DataSheet4U.com
Frequency Change with
VDD
Symbol
f OSC
f V
Test Condition
COSC = 220pF ,
R OSC = 10k
VDD = 4.0V to 6.0V
TC = 25o C
COSC = 220pF
R OSC = 10k
Min Typ Max Unit
320 400 480 kHz
- 1 -%
Under-Voltage Protection
Parameter
Upper Threshold Voltage
Lower Threshold Voltage
Hysteresis ( )VUPH VUPL
Symbol
VUPH
VUPL
VHYS
Test Condition
TC = 25o C
TC = 25o C
TC = 25o C
Short Circuit Protection Control
Parameter
Symbol
Input Threshold Voltage
Input Threshold Voltage
Input Threshold Voltage
Short-Circuit Detect
Threshold Voltage
SCP Terminal Source
Current
Stand-by Voltage
Latch Voltage
Vr 2
Vr1
Vr3
Vtscd
I SCP
VSTB
VLT
Test Condition
CH2
CH1
CH3
Min Typ Max Unit
2.6 2.9 3.2 V
2.23 2.53 2.83 V
- 0.37 -
V
Min Typ Max Unit
2.10 2.40 2.65 V
0.95 1.05 1.15 V
- 1.05 -
1.48 1.64 1.80 V
3.5 2.5 1.5 µA
- 50 100 mV
- 30 100 mV
Note 1: Typical values of all parameters are specified at TC = 25o C .
––
Advanced Analog Technology, Inc.
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AAT1107 전자부품, 판매, 대치품
Advanced Analog Technology, Inc.
BLOCK DIAGRAM
AAT1107
www.DataSheet4U.com
OE1
IE1
Vr1
VERFi
1.233V
GND
Err-Amp
Vr2
IE3
VREFi
1.233V
Vr3
IE2
OE2
DTC1
Err-Amp
VREF
UVC
SCP
Comp
DTC2
UVC
VDD
SCP
IE3
OUT3
LATCH
SCP
UVC
VREFi
1.233V
PWM
VDD
OUT1
UVC
VDD
OUT2
PWM
OSC
Ct
Rt
LATCH
UVC
UVLO
VDD
VREF
VREF
VREF
––
Advanced Analog Technology, Inc.
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