A7332MP8VR [AITSEMI]
DC-DC CONVERTER BUCK SYNCHRONOUS;
| 型号： | A7332MP8VR |
| 厂家： | 
AiT Semiconductor |
| 描述： | DC-DC CONVERTER BUCK SYNCHRONOUS DC-DC转换器 |
| 文件： | 总6页 (文件大小：264K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AiT Semiconductor Inc.
A7332
DC-DC CONVERTER BUCK (STEP-DOWN)
30V, 3A, 500kHz, SYNCHRONOUS
www.ait-ic.com
DESCRIPTION
FEATURES
The A7332 is a synchronous step-down DC/DC
converter that provides wide 4.2V to 30V input
voltage range and 3A continuous load current
capability. At light load condition, the A7332 can
operate at power saving mode to support high
efficiency and reduce power loss.
Low RDS(ON) Integrated Power MOSFET
(120/60mΩ)
Internal Compensation Function
Wide Input Voltage Range: 4.2V to 30V
3A Output Current
Internal 1ms Soft-Start
The A7332 fault protection includes cycle-by-cycle
current limit, UVLO and thermal shutdown. Besides,
soft-start function prevents inrush current at turn-on.
This device uses current mode control scheme
which provides fast transient response. Internal
High Efficiency at Light Load
Cycle-by-Cycle Current Limit
Over-Temperature Protection with Auto Recovery
Under Voltage Lockout
3μA Shutdown Current
compensation
function
reduces
external
Hiccup Short Circuit Protection
Available in PSOP8 Package
compensator components and simplifies the design
process. In shutdown mode, the supply current is
about 3μA.
APPLICATION
LCD Display, TV
The A7332 is available in PSOP8 package.
STB (Set-Top-Box)
Distributed Power System
Networking, XDSL Modem
ORDERING INFORMATION
TYPICAL APPLICATION
Package Type
Part Number
A7332MP8R
A7332MP8VR
PSOP8
MP8
SPQ: 2,500pcs/Reel
V: Halogen free Package
R: Tape & Reel
Note
AiT provides all RoHS products
REV1.0
- DEC 2018 RELEASED -
- 1 -
AiT Semiconductor Inc.
A7332
DC-DC CONVERTER BUCK (STEP-DOWN)
30V, 3A, 500kHz, SYNCHRONOUS
www.ait-ic.com
PIN DESCRIPTION
Top View
Pin #
Symbol
BST
VIN
Function
1
2
3
4
5
6
7
8
9
High side power transistor gate drive boost input.
Power input. Bypass with a 10uF~22uF ceramic capacitor to GND.
SW
Power switching node to connect inductor.
GND
FB
Ground.
Feedback input with reference voltage set to 0.8V.
NC
No connection
EN
Enable input. Set this pin to high level to enable the part, low level to disable.
NC
No connection
Ground.
GND
REV1.0
- DEC 2018 RELEASED -
- 2 -
AiT Semiconductor Inc.
A7332
DC-DC CONVERTER BUCK (STEP-DOWN)
30V, 3A, 500kHz, SYNCHRONOUS
www.ait-ic.com
ABSOLUTE MAXIMUM RATINGS
VIN, Supply Voltage
-0.3V ~ 30V
-0.3V to (VIN+0.5V)
VSW-0.3V to VSW+5V
-0.3V ~ 12V
VSW, Switch Node Voltage
VBST, Boost Voltage
VEN, Enable Voltage
All Other Pins
-0.3V ~ 6V
Operating Temperature Range
Storage Temperature Range
Lead Temperature (Soldering, 10s)
-40ºC ~ +85ºC
-65ºC ~ +150ºC
300ºC
Stress beyond above listed ꢀAbsolute Maximum Ratingsꢁ may lead permanent damage to the device. These are stress ratings only and
operations of the device at these or any other conditions beyond those indicated in the operational sections of the specifications are not
implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
RECOMMENDED WORK CONDITIONS
Parameter
Supply Voltage VIN
Ambient Temperature
Conditions
Min
4.2
-40
Typ
Max
28
Unit
V
-
-
85
ºC
REV1.0
- DEC 2018 RELEASED -
- 3 -
AiT Semiconductor Inc.
A7332
DC-DC CONVERTER BUCK (STEP-DOWN)
30V, 3A, 500kHz, SYNCHRONOUS
www.ait-ic.com
ELECTRICAL CHARACTERISTICS
VIN=12V, TA=25℃, unless otherwise stated
Parameter
Conditions
Min
Typ
-
Max
Unit
V
Input Voltage Range
UVLO Threshold
UVLO Hypothesis
3.7
28
-
3.6
130
0.3
3
-
V
-
-
mV
mA
μA
V
Supply Current in Operation
Supply Current in Shutdown
Regulated Feedback Voltage
High-side Switch On Resistance
Low-side Switch On Resistance
High-side Switch Leakage Current
Upper Switch Current Limit
Oscillation Frequency
VEN = 5V, VFB = 1.1V
VEN = 0V or VEN = GND
4.2V≤VIN ≤30V
-
-
-
-
0.784
0.8
120
60
0.1
5.5
500
90
100
-
0.816
VBST-SW = 5V
-
-
mΩ
mΩ
μA
A
VIN = 5V
-
-
1
-
VEN = 0V, VSW = 0V
Minimum Duty Cycle
-
-
-
-
kHz
%
Maximum Duty Cycle
VFB = 0.7V
-
-
-
Minimum On Time
-
ns
V
EN Input Voltage ꢀHꢁ
1.5
-
-
EN Input Voltage ꢀLꢁ
-
0.6
-
V
Thermal Shutdown
-
160
°C
REV1.0
- DEC 2018 RELEASED -
- 4 -
AiT Semiconductor Inc.
A7332
DC-DC CONVERTER BUCK (STEP-DOWN)
30V, 3A, 500kHz, SYNCHRONOUS
www.ait-ic.com
PACKAGE INFORMATION
Dimension in PSOP8 (Unit: mm)
Symbol
A
Min
1.35
0
Max
1.75
0.15
1.65
0.70
0.51
0.47
0.25
0.23
5.00
3.50
6.20
4.00
2.60
A1
A2
A3
b
b1
c
c1
D
D1
E
1.25
0.50
0.38
0.37
0.17
0.17
4.80
3.10
5.80
3.80
2.20
E1
E2
e
1.270BSC
L
0.45
0.80
L1
L2
R
R1
h
θ
1.04REF
0.25BSC
0.07
0.07
0.30
0°
-
-
0.50
8°
θ1
θ2
θ3
θ4
15°
11°
15°
11°
19°
15°
19°
15°
REV1.0
- DEC 2018 RELEASED -
- 5 -
AiT Semiconductor Inc.
A7332
DC-DC CONVERTER BUCK (STEP-DOWN)
30V, 3A, 500kHz, SYNCHRONOUS
www.ait-ic.com
IMPORTANT NOTICE
AiT Semiconductor Inc. (AiT) reserves the right to make changes to any its product, specifications, to
discontinue any integrated circuit product or service without notice, and advises its customers to obtain the
latest version of relevant information to verify, before placing orders, that the information being relied on is
current.
AiT Semiconductor Inc.'s integrated circuit products are not designed, intended, authorized, or warranted to
be suitable for use in life support applications, devices or systems or other critical applications. Use of AiT
products in such applications is understood to be fully at the risk of the customer. As used herein may involve
potential risks of death, personal injury, or server property, or environmental damage. In order to minimize
risks associated with the customer's applications, the customer should provide adequate design and
operating safeguards.
AiT Semiconductor Inc. assumes to no liability to customer product design or application support. AiT
warrants the performance of its products of the specifications applicable at the time of sale.
REV1.0
- DEC 2018 RELEASED -
- 6 -
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