A7596S5VR-ADJ [AITSEMI]
DC-DC CONVERTER/ BUCK PWM BUCK DC-DC CONVERTER;
| 型号： | A7596S5VR-ADJ |
| 厂家： | 
AiT Semiconductor |
| 描述： | DC-DC CONVERTER/ BUCK PWM BUCK DC-DC CONVERTER DC-DC转换器 |
| 文件： | 总9页 (文件大小：418K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
A7596
DC-DC CONVERTER/ BUCK (STEP-DOWN)
150KHz, 3A PWM BUCK DC-DC CONVERTER
AiT Semiconductor Inc.
www.ait-ic.com
DESCRIPTION
FEATURES
The A7596 series of regulators are monolithic
integrated circuits that provide all the active functions
for a step-down (buck) switching regulator, capable of
driving a 3A load with excellent line and load
regulation. These devices are available in fixed output
voltage of 5V and adjustable output version.
5V and adjustable output versions
Adjustable version output voltage range 1.23V
to 37V
Input voltage range up to 40V
Guaranteed 3A output current
150KHz fixed frequency internal oscillator
Built-in thermal shutdown and current limit
protection
The A7596 operates at a switching frequency of
150KHz thus allowing smaller sized filter components
than what would be needed with lower frequency
switching regulators.
Available in TO-263-5 Package
APPLICATION
Fixed voltage power supply for LCD monitor
Other features include a guaranteed ±3% tolerance
on output voltage under specified input voltage and
output load conditions, and ±15% on the oscillator
frequency. External shutdown is included, featuring
typically 100μA standby current.
and LCD TV
On-Card switching regulation
Simple high efficiency Step-down regulator
TYPICAL APPLICATION
The A7596 is available in TO-263-5 package.
ORDERING INFORMATION
Package Type
Part Number
A7596S5R-XXX
VOUT= 1.23V x (1+ R1/R2), CIN = 100μF, Aluminum Electrolytic;
COUT = 220μF, 25V, Aluminum Electrolytic; D1 = Schottky, 5A/40V;
L1 = 33μH
A7596S5VR-XXX
A7596S5U-XXX
A7596S5VU-XXX
TO-263-5
S5
Figure 1 Adjustable Output Voltage
XXX: Output Voltage
050=5.0V; ADJ=Adjustable
U = Tube
Note
R: Tape & Reel
CIN = 100μF, Aluminum Electrolytic; COUT = 220μF, 25V,
Aluminum Electrolytic; D1 = Schottky, 5A/40V; L1 = 33μH
V: Halogen free Package
Figure 2 Fixed Voltage Regulator:
AiT provides all RoHS products
Suffix ꢀ V ꢀ means Halogen free Package
REV1.2
- MAY 2009 RELEASED, MAR 2015 UPDATE -
- 1 -
A7596
DC-DC CONVERTER/ BUCK (STEP-DOWN)
150KHz, 3A PWM BUCK DC-DC CONVERTER
AiT Semiconductor Inc.
www.ait-ic.com
PIN DESCRIPTION
Top View
Pin #
Symbol
VIN
Function
1
2
3
4
5
Input Voltage Pin
Output Voltage Pin
Ground Pin
VOUT
GND
FB
Feed Back Pin
Enable Pin
/EN
REV1.2
- MAY 2009 RELEASED, MAR 2015 UPDATE -
- 2 -
A7596
DC-DC CONVERTER/ BUCK (STEP-DOWN)
150KHz, 3A PWM BUCK DC-DC CONVERTER
AiT Semiconductor Inc.
www.ait-ic.com
ABSOLUTE MAXIMUM RATINGS
PD, Power Dissipation
Internally Limited(W)
45V
VIN, Maximum Supply Voltage
EN, EN Pin Input Voltage
-0.3V < V < + VIN
3.0°C /W
ꢁJT, Thermal resistance junction to Case
ꢁJA, Thermal resistance junction to Ambient
TJ, Operating Junction Temperature Range
TSTG, Storage Temperature Range
ESD, Minimum EDS Rating
36°C /W
-40°C~+125°C
-65°C~+150°C
2KV
TLEAD, Lead Soldering Temperature (Soldering, 10 sec)
260°C
Stress beyond above listed ꢀAbsolute Maximum Ratingsꢂ 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 OPERATING CONDITIONS
Parameter
Symbol
VIN
Min
3.4
-40
Typ.
3
Max
40
Units
V
Input Voltage
Peak Current
IPC
A
Maximum Load Current
Junction Temperature
IOUT
TJ
A
150
°C
REV1.2
- MAY 2009 RELEASED, MAR 2015 UPDATE -
- 3 -
A7596
DC-DC CONVERTER/ BUCK (STEP-DOWN)
150KHz, 3A PWM BUCK DC-DC CONVERTER
AiT Semiconductor Inc.
www.ait-ic.com
ELECTRICAL CHARACTERISTICS
These specifications apply VIN = 12V for 5.0V options, and VIN = 24V for Adj option, and the operating ambient
temperatures TA = 25°C, Unless otherwise specified
Parameter
Symbol
Conditions
4.5V≦VIN≦40V
Min.
Typ.
Max.
Unit
ADJ 1.193 1.230 1.267
5.0 4.850 5.000 5.150
0.2A≦IOUT≦2A,VOUT=3V
7V≦VIN≦40V
Output VoltageNOTE1
VOUT
V
0.2A≦IOUT≦3A
VIN=12V, ILOAD=3A, VOUT=3V ADJ
90
80
Efficiency
ꢃ
%
VIN=12V, ILOAD=3A
VFB=1.3V
5.0
Feeback Bias Current
IB
10
50
nA
(Adjustable Version Only)
IOUT=3ANOTE1,2
NOTE2
Saturation Voltage
Duty Cycle (ON)
Duty Cycle (OFF)
Oscillator Frequency
Output Leakage
Current
VSAT
DC
DC
fO
1.16
100
0
1.4
V
%
%
NOTE3
127
150
173
100
KHz
μA
mA
mA
μA
NOTE4
Output=0VNOTE1, 3
Output=-0.9VNOTE5
NOTE3
IL
2
5
Quiescent Current
Standby Current
IQ
ISTBY
VIH
VIL
IH
/EN Pin=5V
Low (ON)
100
1.3
1.4
5
200
0.6
V
High (OFF)
2.0
/EN Pin Input Level
VLEVEL= 2.5V (OFF)
VLEVEL= 0.5V (ON)
15
5
μA
IL
0.02
NOTE1: No diode, inductor or capacitor connected to output pin.
NOTE2: Feedback pin removed from output and connected to 0V to force the output transistor switch ON.
NOTE3: Feedback pin removed from output and connected to 5V and the ADJ version
NOTE4: The switching frequency is reduced when the second stage current limit is activated.
NOTE5: VIN = 40V.
REV1.2
- MAY 2009 RELEASED, MAR 2015 UPDATE -
- 4 -
A7596
DC-DC CONVERTER/ BUCK (STEP-DOWN)
150KHz, 3A PWM BUCK DC-DC CONVERTER
AiT Semiconductor Inc.
www.ait-ic.com
TYPICAL PERFORMANCE CHARACTERISTICS
25℃ Unless Note
1.
Switch Saturation Voltage
2.
Switch Current Limit
3. Dropout Voltage
4. Operating Quiescent Current
5. Shutdown Quiescent Current
6. Minimum Operating Supply Voltage
REV1.2
- MAY 2009 RELEASED, MAR 2015 UPDATE -
- 5 -
A7596
DC-DC CONVERTER/ BUCK (STEP-DOWN)
150KHz, 3A PWM BUCK DC-DC CONVERTER
AiT Semiconductor Inc.
www.ait-ic.com
7.
/EN Pin Current (Sinking)
8.
Switching Frequency
REV1.2
- MAY 2009 RELEASED, MAR 2015 UPDATE -
- 6 -
A7596
DC-DC CONVERTER/ BUCK (STEP-DOWN)
150KHz, 3A PWM BUCK DC-DC CONVERTER
AiT Semiconductor Inc.
www.ait-ic.com
BLOCK DIAGRAM
REV1.2
- MAY 2009 RELEASED, MAR 2015 UPDATE -
- 7 -
A7596
DC-DC CONVERTER/ BUCK (STEP-DOWN)
150KHz, 3A PWM BUCK DC-DC CONVERTER
AiT Semiconductor Inc.
www.ait-ic.com
PACKAGE INFORMATION
Dimension in TO-263-5 (Unit: mm)
Symbol
Min
Max
A
B
C
D
E
F
G
I
10.030
8.250
4.340
1.140
0.330
0.737
1.570
12.700
14.600
2.290
10.670
9.170
4.590
1.400
0.432
0.889
1.830
1.650
16.130
2.790
K
L
M
N
7°
3°
REV1.2
- MAY 2009 RELEASED, MAR 2015 UPDATE -
- 8 -
A7596
DC-DC CONVERTER/ BUCK (STEP-DOWN)
150KHz, 3A PWM BUCK DC-DC CONVERTER
AiT Semiconductor Inc.
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 servere 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.
REV1.2
- MAY 2009 RELEASED, MAR 2015 UPDATE -
- 9 -
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