Details subject change without notice. BUCK_BOOST BOOST CONTROLLE
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AAT1107
Details subject change without notice.
BUCK_BOOST BOOST CONTROLLER WITH ADJUSTABLE
FEATURES
Complete Power Control Circuitry CH1: Buck_Boost, CH2: Boost Adjustable Dropout (LDO) Regulator Under-Voltage Lockout (UVLO) Protection Totem Pole Output Output Short Circuit Protection Dead Time Control 100% Wide Operating Frequency: 10kHz 800kHz
GENERAL DESCRIPTION
AAT1107 provides integrated two-channel pulse-width-modulation (PWM) solution power supply DC-DC system. This device offers system engineers flexibility tailor-make power supply circuitry specific applications. Each channel contains error amplifier, comparator, dead-time control (DTC) output driver. channels share common features under-voltage protection, oscillator, short circuit protection voltage reference circuit. dead-time control inputs assigned channel (CH1) channel (CH2) individually, dead-time control inputs used control on/off operation. AAT1107 contains step-up (boost) circuit inverting (buck_boost) circuit CH1. addition, provide 100% dead-time through resistive divider network soft-start implemented paralleling resistor with capacitor. Maximum output current regulator enlarged connecting nMOSFET bipolar) source follower stage OUT3 pin.
CONFIGURATION
VIEW
DTC1 OUT1 VREF OUT3 DTC2 OUT2
TSSOP-16 PACKAGE
Advanced Analog Technology, Inc.
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AAT1107
DESCRIPTION
Name DTC1 OUT1 OUT2 DTC2 VREF Description External Timing Capacitance External Timing Resistance Inverting Input Regulator Inverting Input Error Amplifier Output Error Amplifier Output Dead-Time Soft-Start Setting Output Ground Power Supply Output Output Dead-Time Soft-Start Setting Output Error Amplifier Inverting Input Error Amplifier Output Timer Latch Setting Reference Voltage (2.505V) Output
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AAT1107
ABSOLUTE MAXIMUM RATINGS
Characteristics Symbol Value Unit
Supply Voltage Input Voltage DTC) Output Voltage Output Current Operating Free-Air Temperature Range Storage Temperature Range Power Dissipation
+0.3
Tstorage
RECOMMENDED OPERATING CONDITIONS
Supply Voltage Input Voltage, IE1, IE2, Output Voltage Oscillator (OSC) Capacitance Oscillator (OSC) Resistance Oscillation (OSC) Frequency Output Current, OUT1 Output Current, Operating Free-Air Temperature
Symbol Unit
15,000 50.0
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AAT1107
ELECTRICAL CHARACTERISTICS, 5.0V (UNLESS OTHERWISE SPECIFIED) (SEE NOTE
Oscillator Parameter Symbol Test Condition 220pF Unit
Frequency
4.0V 6.0V Frequency Change with 220pF
Under-Voltage Protection Parameter
Symbol
Test Condition
Upper Threshold Voltage Lower Threshold Voltage Hysteresis (VUPH VUPL
VUPH VUPL VHYS
2.83
Unit
2.23 2.53 0.37
Short Circuit Protection Control Parameter Symbol
Test Condition
Unit
Input Threshold Voltage Input Threshold Voltage Input Threshold Voltage Short-Circuit Detect Threshold Voltage Terminal Source Current Stand-by Voltage Latch Voltage
Vtscd VSTB
2.10 0.95 1.48
2.40 1.05 1.05 1.64
2.65 1.15 1.80
Note Typical values parameters specified
Advanced Analog Technology, Inc.
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AAT1107
ELECTRICAL CHARACTERISTICS, 5.0V (UNLESS OTHERWISE SPECIFIED) (SEE NOTE (CONT.)
Reference Voltage Parameter
Internal Reference Voltage Reference Voltage Input Voltage Regulation Output Regulation
(Error Amplifier) Parameter
Symbol Test Condition Unit VREFi -1mA 1.220 1.233 1.246 VREF -1mA 2.430 2.505 2.580
-1mA =4.0V 6.0V -0.1mA
Input Offset Voltage Input Bias Current Input Voltage Range Open-Loop Voltage Gain Output Voltage Swing Output Sink Current Output Source Current Common-Mode Rejection Ratio
Operating Current Parameter
Test Condition CH1, CH2, Unity Gain
Unit
CH1, CH1,
VOS+ VOS- CMRR OE=1.25V OE=1.25V
Test Condition
Unit
DD-OFF Supply Current DD-ON
Output "OFF" State
Advanced Analog Technology, Inc.
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AAT1107
ELECTRICAL CHARACTERISTICS, 5.0V (UNLESS OTHERWISE SPECIFIED) (SEE NOTE (CONT.)
Dead-Time Control PARAMETER Input Bias Current Symbol TEST CONDITION VDTC UNIT 1.87 1.97 2.07
Input Threshold Voltage (DTC1) Input Threshold Voltage (DTC2) Latch Input Voltage (DTC1) Latch Input Voltage (DTC2) Latch Mode Source Current (DTC1) Latch Mode Source Current (DTC2)
Output Stage Parameter High-Level Output Voltage
V1d100 V2d100 V1DTC I1DTC
Duty=0%, =10kHz Duty=100%, =10kHz Duty=0%, =10kHz Duty=100%, =10kHz 40µA 100µA DTC1=0V DTC2=2.0V
1.38 1.38 1.87 2.28
1.48 1.48 1.97 2.48
1.58 1.58 2.07
Symbol Test Condition -50mA
Unit
Low-Level Output Voltage Rise Time Fall Time Leakage Current Capacitance Output
Parameter Output Voltage
RISE FALL LEAK
+50mA =1,000pF =1,000pF =6.0V
Symbol Test Condition =5V, VOUT =3.3V
3.17
3.30
3.43
Unit
Line Regulation Load Regulation
=4.0V~6.5V, =10mA =1mA~30mA
0.08
0.30
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AAT1107
BLOCK DIAGRAM
VERFi 1.233V
Err-Amp
Comp
OUT1
VREFi 1.233V
OUT2
Err-Amp VREF
DTC1 DTC2
LATCH LATCH
UVLO
OUT3
VREFi 1.233V VREF
VREF
VREF
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AAT1107
APPLICATION CIRCUIT
OUT1
VREF
AAT1107
OUT2 OUT3
VREF
DTC1 DTC2
CSCP
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AAT1107
APPLICATION CIRCUIT
Optional Circuit: Positive charge pump circuit
OUT1
VREF
AAT1107
OUT2 OUT3
VREF
DTC1 DTC2
Optional Circuit: enlarge output current Optional Circuit negative charge pump circuit
CSCP
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AAT1107
BUCK-BOOSTINVERTING TIMING CHARTCH1
1.97V
1.05V
1.48V
PWMOUTPUT OUTPUT
1.64V
tSCP
SCPCOMP
2.53V
LOCKOUT FREE
Note:
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AAT1107
BOOST STEP-UPTIMING CHART CH-2
2.40V 1.97V
1.48V
PWMOUTPUT
OUTPUT
1.64V
tSCP
COMP
2.53V
LOCKOUT FREE
Note:
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AAT1107
PACKAGE DIMENSION
16-PIN TSSOP
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AAT1107
PACKAGE DIMENSION (CONT.)
SYMBOLS
DIMENSIONS MILLIMETERS 1.05 0.05 -0.20 -4.900 6.20 4.30 -0.50 -TYP 1.10 0.10 1.00 0.25 0.127 5.075 6.40 4.40 0.65 0.60 -MAX 1.20 0.15 1.05 0.28 -5.100 6.60 4.50 -0.70 0.076
DEMINSIONS INCHES 0.041 0.002 -0.008 -0.1930 0.244 0.170 -0.020 -TYP 0.043 0.004 0.039 0.010 0.005 0.1998 0.252 0.173 0.026 0.024 -MAX 0.047 0.006 0.041 0.011 -0.2000 0.260 0.177 -0.028 0.003
NOTE: CONTROLLING DIMENSION: MILLIMETERS LEAD FRAME MATERIAL: OLIN C7025/EFTEC DIMENSION DOES INCLUDE MOLD FLASH, BURRS GATE BURRS. MOLD FLASH, BURRS GATE BURRS SHALL EXCEED 0.006" [0.15 MILLIMETERS] END. DIMENSION "E1" DOES INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL EXCEED 0.010" [0.25 MILLIMETERS] SIDE. DIMENSION DOES INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL 0.003" [0.08 MILLIMETERS] TOTAL EXCESS DIMENSION MAXIMUM MATERIAL CONDITION. DAMBAR CANNOT LOCATED LOWER RADIUS FOOT. MINIMUM SPACE BETWEEN PROTRUSION ADJACENT LEAD 0.0028" [0.07 MILLIMETERS]. TOLERANCE: 0.010 [0.25 MILLIMETERS] UNLESS OTHERWISE SPECIFIED. OTHERWISE DIMENSION FOLLOW ACCEPTABLE SPEC. REFERENCE DOCUMENT: JEDEC SPEC MO-153.
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AAT1107
TAPE REEL
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AAT1107
TAPE REEL (CONT.)
NOTE:
SPROCKET HOLE PITCH CUMULATIVE TOLERANCE MILLIMETERS. CAMBER EXCEED MILLIMETER MILLIMETERS. MATERIAL: ANTI-STATIC BLACK ADVANTEK POLYSTYRENE. MEASURED PLANE MILLIMETERS ABOVE BOTTOM POCKET. MEASURED FROM PLANE INSIDE BOTTOM POCKET SURFACE CARRIER. POCKET POSITION RELATIVE SPROCKET HOLE MEASURED TRUE POSITION POCKET, POCKET HOLE.
PART MARKING
TSSOP16 MARKING
AAT1107 XXXXXX
TSSOP16 BACK MARKING
YYWW
Advanced Analog Technology, Inc.
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AAT1107
ORDERING INFORMATION
Advanced Analog Technology, Inc.
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