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PDF AAT1351 Data sheet ( Hoja de datos )
| Número de pieza | AAT1351 | |
| Descripción | 2-CHANNEL SWITCHING REGULATOR | |
| Fabricantes | Advanced Analog Technology | |
| Logotipo |  |
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Advanced Analog Technology, Inc.
Details are subject to change without notice
AAT1351
2-CHANNEL SWITCHING REGULATOR
FEATURES
GENERAL DESCRIPTION
z Complete PWM Power Control Circuitry
z Under-Voltage Lockout (UVLO) Protection
z Open Drain Output
z Output Short Circuit Protection
z Low Dissipation Current 1.6mA
z Dead-Time Control 0% to 100%
z Wide Operating Frequency
The AAT1351 provides an integrated two-channel
pulse-width-modulation (PWM) solution for the
power supply of DC-DC system; this device offers
the systems engineer 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,
10 kHz to 800 kHz
z VDD Range 4.0V to 14.0V
PIN CONFIGURATION
oscillator, short circuit protection and voltage
reference circuit are the common features for the
two channels.
DataSheet4U.com
Both channels
of
AAT1351
can
be
used
for
DC-DC
DataShee
converter operations including step-up, step-down,
TOP VIEW
Ct 1
Rt 2
16 VREF
15 SCP
and inverting. 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
NE1 3
14 NE2
dead-time control inputs are assigned for channel 1
IE1 4
OE1 5
DTC1 6
OUT1
GND
7
8
13 IE2
12 OE2
11 DTC2
10 OUT2
9 VDD
(CH1) and channel 2 (CH2) individually, and dead-
time control inputs can be used to control on / off
operation.
With a minimum number of external components,
the AAT1351 offers a simple and cost effective
solution.
SOP-16 PACKAGE
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– Advanced Analog Technology, Inc. –
Page 1 of 16
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Advanced Analog Technology, Inc.
AAT1351
ELECTRICAL CHARACTERISTICS, VDD = 6.0V (UNLESS OTHERWISE
SPECIFIED) (SEE NOTE 1) (CONT.)
REFERENCE VOLTAGE
PARAMETER
Reference Voltage
Input Voltage Regulation
Output Regulation
EA (ERROR AMPLIFIER)
PARAMETER
Input Offset Voltage
Input Bias Current
et4U.com Input Voltage Range
Open-Loop Voltage Gain
Output Voltage Swing
Output Sink Current
Output Source Current
Common-Mode Rejection
Ratio
TEST CONDITION MIN TYP MAX UNIT
IREF = −1mA , TC = 25 oC
VREF 2.4 2.5 2.6
V
VRI
IREF = −1mA ,
VDD = 4.0V to 14.0V
VRO
IREF = −0.1mA to
− 3.0 mA
- 1 5 mV
- 1 10 mV
VIO
I IB
VIR
A VO
VOS+
VOS−
I OS+
I OS−
TEST CONDITION
CH1, CH2, Unity Gain
CH1, CH2
DCaHta1S, hCeHet24U.com
OE=1.25V
OE=1.25V
CMRR
MIN
-
-
0.5
70
2.3
-
3
− 75
TYP MAX UNIT
- 6 mV
±15 ±100 nA
- 1.6 V
85 - dB
2.5 -
0.7 0.9
V
20 - mA
− 45 -
µA
60 80 - dB
DataShee
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– Advanced Analog Technology, Inc. –
Page 5 of 16
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Advanced Analog Technology, Inc.
PACKAGE DIMENSION (CONT.)
AAT1351
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– Advanced Analog Technology, Inc. –
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11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet AAT1351.PDF ] | |
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