Details subject change without notice 2-CHANNEL SWITCHING REGULAT
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AAT1351
Details subject change without notice
2-CHANNEL SWITCHING REGULATOR
FEATURES
Complete Power Control Circuitry Under-Voltage Lockout (UVLO) Protection Open Drain Output Output Short Circuit Protection Dissipation Current1.6mA Dead-Time Control0% 100% Wide Operating Frequency
GENERAL DESCRIPTION
AAT1351 provides integrated two-channel pulse-width-modulation (PWM) solution power supply DC-DC system; this device offers systems engineer flexibility tailor-make power supply circuitry specific applications. Each channel contains error amplifier, comparator, dead-time control (DTC) output driver. under-voltage protection, oscillator, short circuit protection voltage reference circuit common features channels. Both channels AAT1351 used DC-DC converter operations including step-up, step-down, inverting. Dead-time control provide 100% dead-time through resistive divider network. Soft-start implemented paralleling resistor with capacitor. dead-time control inputs assigned channel (CH1) channel (CH2) individually, deadtime control inputs used control operation. With minimum number external components, AAT1351 offers simple cost effective solution.
Range4.0V 14.0V
CONFIGURATION
VIEW
DTC1 OUT1 VREF DTC2 OUT2
SOP-16 PACKAGE
Advanced Analog Technology, Inc.
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AAT1351
DESCRIPTION
NAME DESCRIPTION External Timing Capacitance External Timing Resistance
DTC1 OUT1 OUT2 DTC2 VREF
Noninverting Input Error Amplifier 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 Noninverting Input Error Amplifier Timer Latch Setting Reference Voltage (2.5V) Output
Advanced Analog Technology, Inc.
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AAT1351
ABSOLUTE MAXIMUM RATINGS
CHARACTERISTICS SYMBOL VALUE 14.0 UNIT
Supply Voltage Input Voltage DTC) Output Voltage Output Current Operating Free-Air Temperature Range Storage Temperature Range Power Dissipation
+0.3
+125
Tstorage
RECOMMENDED OPERATING CONDITIONS
Supply Voltage, Input Voltage, IE1, Output Voltage Oscillator (OSC) Capacitance Oscillator (OSC) Resistance Oscillator (OSC) Frequency Output Current, OUT1 Operating Free-Air Temperature
SYMBOL 14.0 UNIT
15,000 50.0
Advanced Analog Technology, Inc.
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AAT1351
ELECTRICAL CHARACTERISTICS, 6.0V (UNLESS OTHERWISE SPECIFIED) (SEE NOTE
OSCILLATOR PARAMETER
TEST CONDITION
UNIT
Frequency
330pF, 4.0V 14.0V, 330pF,
Frequency Changes with
UNDER VOLTAGE PROTECTION PARAMETER Upper Threshold Voltage VUPH
TEST CONDITION
Lower Threshold Voltage Hysteresis VUPH VUPL
VUPL VHYS
UNIT 2.53 0.37
SHORT CIRCUIT PROTECTION CONTROL PARAMETER TEST CONDITION
UNIT
Input Threshold Voltage Short Circuit Detect Threshold Voltage Terminal Source Current Stand-by Voltage Latch Voltage
VSTB
CH1,
0.65
1.18 0.70
0.75
Note Typical values parameters specified
Advanced Analog Technology, Inc.
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AAT1351
ELECTRICAL CHARACTERISTICS, 6.0V (UNLESS OTHERWISE SPECIFIED) (SEE NOTE (CONT.)
REFERENCE VOLTAGE PARAMETER
Reference Voltage Input Voltage Regulation Output Regulation
(ERROR AMPLIFIER) PARAMETER
VREF
TEST CONDITION -1mA
UNIT
-1mA 4.0V 14.0V -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
VOS+ VOS- CMRR
TEST CONDITION CH1, CH2, Unity Gain
UNIT
±100
CH1, CH1,
OE=1.25V OE=1.25V
Advanced Analog Technology, Inc.
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AAT1351
ELETRICAL CHARACTERISTICS, 6.0V (UNLESS OTHERWISE SPECIFIED) (SEE NOTE (CONT.)
DEAD-TIME CONTROL PARAMETER Input Bias Current TEST CONDITION VDTC UNIT
1.79 1.32 2.28
1.97 1.48 2.48
2.15
Input Threshold Voltage (DTC)
Duty 10kHz
Vd100 Duty 100%, 10kHz 1.64
Latch Input Voltage Latch Mode Source Current
OUTPUT STAGE PARAMETER
VDTC 40µA DTC1, DTC2=0V
Saturation Voltage Leakage Current
OPERATING CURRENT PARAMETER
VSAT LEAK
TEST CONDITION 75mACH1, =14.0V
UNIT
TEST CONDITION
UNIT
DD-OFF Supply Current DD-ON
Output "OFF" State
Advanced Analog Technology, Inc.
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AAT1351
BLOCK DIAGRAM
Err-Amp Comp
OUT1
Err-Amp
OUT2
DTC1
DTC2
LATCH
UVLO
LATCH
Advanced Analog Technology, Inc.
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AAT1351
APPLICATION CIRCUIT
VREF
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AAT1351
TIMGING CHART
2.05V
1.18V
1.45V
OUTPUT OUTPUT
0.7V
tSCP
COMP
2.53V
LOCKOUT FREE
Note:
Advanced Analog Technology, Inc.
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AAT1351
PACKAGE DIMENSION
16-PIN
Advanced Analog Technology, Inc.
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AAT1351
PACKAGE DIMENSION (CONT.)
Advanced Analog Technology, Inc.
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AAT1351
PACKAGE DIMENSION (CONT.)
SYMBOLS
NOTE:
DIMENSIONS MILLIMETERS 1.47 1.60 1.73 0.10 -0.25 -1.45 -0.33 0.41 0.51 0.19 0.20 0.25 9.80 9.91 10.01 5.79 5.99 6.20 3.81 3.91 3.99 -1.27 -0.38 0.71 1.27 -0.076
DEMINSIONS INCHES 0.058 0.063 0.068 0.004 -0.010 -0.057 -0.013 0.016 0.020 0.0075 0.0080 0.0098 0.386 0.390 0.394 0.228 0.236 0.244 0.150 0.154 0.157 -0.050 -0.015 0.028 0.050 -0.003
CONTROLLING DIMENSION: INCH LEAD FRAME MATERIAL: COPPER DIMENSION DOES INCLUDE MOLD FLASH, BURRS GATE BURRS. MOLD FLASH, BURRS GATE BURRS SHALL EXCEED 0.006" [0.15 MILLIMETERS] DIMENSION "E1" DOES INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SAHLL 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 MS-012
Advanced Analog Technology, Inc.
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AAT1351
TAPE REEL
Advanced Analog Technology, Inc.
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AAT1351
TAPE REEL (CONT.)
X.XXX X.XXX X.XX
0.0025 0.006
0.025 0.10 0.25
UNIT: MILLIMETERS
NOTE:
SPROCKET HOLE PITCH CUMULATIVE TOLERANCE 0.2. CHAMBER EXCEED MILLIMETER MILLIMETERS. MATERIAL: 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.
Advanced Analog Technology, Inc.
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AAT1351
PART MARKING
SOP16 MARKING
AAT1351 BXXXXX.X YYWW TAIWAN
DATE CODE
(0416 16th week Year 2004)
NOTE: SOP16 BACK MARKING.
Advanced Analog Technology, Inc.
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AAT1351
ORDERING INFORMATION
Advanced Analog Technology, Inc.
Page V1.0
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