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PDF APW7037A Data sheet ( Hoja de datos )
| Número de pieza | APW7037A | |
| Descripción | 8-Pin Synchronous Buck PWM Controller | |
| Fabricantes | Anpec Electronics | |
| Logotipo |  |
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APW7037/A/B
8-PIN Synchronous Buck PWM Controller
Features
General Description
• Operating with Single 5V or 12V Input
• Drives N-Channel MOSFETs
• Simple Single-Loop Control Design
− Voltage-Mode PWM Control
− Full 0% to 100% Duty Ratio
− Fast Transient Response
• ±2% Output Voltage Accuracy Over Temperature
• Under-Voltage Protection for Output
• 200/400kHz Constant Frequency Operation
-200kHz for APW7037 & APW7037B
-400kHz for APW7037A
• Small size, 8-PIN Package (SOIC or TSSOP)
• Lead Free Available (RoHS Compliant)
The APW7037 series are designed to provide a low
cost synchronous Buck regulator for on-board DC to
DC converter applications. The APW7037 series to-
gether with dual N-channel MOSFETs such as
APM7313, provide a low cost solution for such
applications. Each device features an internal 200/
400kHz oscillator, Power-On-Reset (POR) for both VCC
and VC supplies, an external programmable soft-start
function as well as output under-voltage detection that
latches off the device when an output short is detected.
Pin Description
Applications
• Graphics Cards
• DDR Memory Power Supply
• DDR Memory Termination Voltage
• Low-Voltage Distributed Power Supplies
FB
VCC
LDRV
GND
1
2
3
4
8 SS
7 COMP
6 VC
5 HDRV
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise
customers to obtain the latest version of relevant information to verify before placing orders.
www.DataSheet4U.com
Copyright ANPEC Electronics Corp.
1
www.anpec.com.tw
Rev. A.6 - Apr , 2005
www.DataSheet4U.com
www.DataSheet4U.com
1 page  
APW7037/A/B
Typical Applications
1. Dual supply voltage(5V and 12V) application
Q2
A P M 2300A
S h u td o wn
C7
0.1uF
R3
24k
C8
2200pF
R4
3
C1
1uF
VCC
C2
1uF
VC
8 SS
5
HDRV
U1
APW 7037
7 COM P
LDRV
3
GND
FB 1
C5
1uF
C4 L3
100uF 1uH
+12V
C3
47uF
V IN
+5V
Q1A
A P M 7313
Q1B
A P M 7313
L4
3.3uH
R1
249
V OUT
1.5V/5 A
C6,C9
2 x 150uF
R2
1.24k
2. Single supply voltage(5V) application
Q2
A P M 2300A
Shutdown
C8
0.1uF
R3
24k
C9
2200pF
R4
3
D3
1N4148
C1
1uF
C2
1uF
V CC
VC
8 SS
5
HDRV
U1
APW 7037
7 COM P
LDRV
3
D1
1N4148
C3
0.1uF
D2
1N4148
C6
1uF
Q1A
APM7312
Q1B
APM7312
GND
FB 1
C5 L3
100uF 1uH
C4
47uF
V IN
+5V
L4
3.3uH
R1
249
V OU T
1.5V/5 A
C7,C10
2 x150uF
R2
1.24k
Copyright ANPEC Electronics Corp.
Rev. A.6 - Apr, 2005
5
www.anpec.com.tw
5 Page 
APW7037/A/B
Cover Tape Dimensions
Application
SOP- 8
TSSOP- 8
Carrier Width
12
12
Cover Tape Width
9.3
9.3
Customer Service
Anpec Electronics Corp.
Head Office :
5F, No. 2 Li-Hsin Road, SBIP,
Hsin-Chu, Taiwan, R.O.C.
Tel : 886-3-5642000
Fax : 886-3-5642050
Taipei Branch :
7F, No. 137, Lane 235, Pac Chiao Rd.,
Hsin Tien City, Taipei Hsien, Taiwan, R. O. C.
Tel : 886-2-89191368
Fax : 886-2-89191369
Devices Per Reel
2500
2500
Copyright ANPEC Electronics Corp.
Rev. A.6 - Apr, 2005
11
www.anpec.com.tw
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet APW7037A.PDF ] | |
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