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參數(shù)資料
| 型號： | MC34271FB |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Internal power supply connectors (C-UL, TUV), Discrete wire connectors; HRS No: 680-1089-7 00; Connector Type: Wire; Contact Gender: Female; Termination Style: Crimping; Contact Mating Area Plating: Tin; Operating Temperature Range (degrees C): -35 to 85; General Description: Female contact |
| 中文描述： | 0.5 A DUAL SWITCHING CONTROLLER, 140 kHz SWITCHING FREQ-MAX, PQFP32 |
| 封裝： | PLASTIC, LQFP-32 |
| 文件頁數(shù)： | 2/12頁 |
| 文件大?。?/td> | 343K |
| 代理商： | MC34271FB |
MC34271
http://onsemi.com
2
Representative Block Diagram
This device contains 350 active transistors.
Vin
D1
S1
SW1
Sync
Drv1
EN1
ELD
Mode
RT
Vref
1.25 V
Ref1
FB1
VDD
Comp1
OSC
D2
S2
VB
V0
V1
V2
V3
V4
Ref2
FB2
Comp2
VA = 5.0 V
Gnd
BIAS
VB
V2
V3
V4
16
15
14
13
12
19
18
17
10
11
9
6
7
32
26
8
31
30
27
2
3
4
23
22
21
28
29
On/Off
FromDAC
÷
2
V1
V0
BIAS Output
Buffers
VB
25
μ
P Control
EL
Control
EL
Panel
Vin
EN2
VDD
Circuit #1
PWM
Circuit #2
PWM
ELD
EN
VRef
VDD
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