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参数资料
| 型号： | MIC5156-5.0BM |
| 厂商： | MICREL INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | Super LDO⑩ Regulator Controller |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO8 |
| 封装： | SOIC-8 |
| 文件页数： | 7/13页 |
| 文件大小： | 271K |
| 代理商： | MIC5156-5.0BM |
August 2005
3
MIC5156/5157/5158
MIC5156/5157/5158
Micrel, Inc.
Pin Description MIC5156
Pin Number
Pin Name
Pin Function
1
EN
Enable (Input): TTL high enables regulator; TTL low shuts down regulator.
2
FLAG
Output Flag (Output): Open collector output is active (low) when VOUT is more
than 8% below nominal output. Circuit has 3% hysteresis.
3
GND
Circuit ground.
4
VP
N-channel Gate Drive Supply Voltage: User supplied voltage for driving the
gate of the external MOSFET.
5
VDD
Supply Voltage (Input): Supply voltage connection. Connect sense resis-
tor (RS) to VDD if current limiting used. Connect supply bypass capacitor to
ground near device.
6
G
Gate (Output): Drives the gate of the external MOSFET.
7
D
Drain and Current Limit (Input): Connect to external MOSFET drain and ex-
ternal sense resistor (current limit), or connect to VDD and external MOSFET
drain (no current limit).
8 (3.3V, 5V)
S
Source (Input): Top of internal resistive divider chain. Connect directly to the
load for best load regulation.
8 (adjustable)
EA
Error Amplier (Input): Connect to external resistive divider.
Pin Description MIC5157, MIC5158
Pin Number
Pin Name
Pin Function
1 (MIC5157)
5V
5V Conguration (Input): Connect to S (source) pin for 5V output.
1 (MIC5158)
EA
Error Amplier (Input): Connect to external resistive divider to obtain adjust-
able output.
2 (MIC5157)
3.3V
3.3V Conguration (Input): Connect to S (source) pin for 3.3V output.
2 (MIC5158)
5VFB
5V Feedback (Input): Connect to EA for xed 5V output.
3
FLAG
Output Voltage Flag (Output): Open collector is active (low) when VOUT is 8%
or more below its nominal value.
4
GND
Circuit ground.
5
VCP
Voltage Tripler Output [Filter Capacitor]. Connect a 1 to 10F capacitor to ground.
6
C2–
Charge Pump Capacitor 2: Second stage of internal voltage tripler. Connect a
0.1F capacitor from C2+ to C2–.
7
C2+
Charge Pump Capacitor 2: See C2– pin 6.
8
C1+
Charge Pump Capacitor 1: First stage of internal voltage tripler. Connect a
0.1F capacitor from C1+ to C1–.
9
C1–
Charge Pump Capacitor 1: See C1+ pin 8.
10
VDD
Supply Voltage (Input): Supply voltage connection. Connect sense resis-
tor (RS) to VDD if current limiting used. Connect supply bypass capacitor to
ground near device.
11
G
Gate (Output): Connect to External MOSFET gate.
12
D
Drain and Current Limit (Input): Connect to external MOSFET drain and ex-
ternal sense resistor (current limit), or connect to VDD and external MOSFET
drain (no current limit).
13 (MIC5157)
S
Source and 3.3V/5V Conguration: Top of internal resistor chain. Connect to
source of external MOSFET for 3.3V, 5V, and 12V operation. Also see 3.3V
and 5V pin descriptions.
13 (MIC5158)
S
Source (Input): Top of internal resistor chain. Connect to top of external resis-
tive divider and source of external MOSFET.
14
EN
Enable (Input): TTL high enables regulator; TTL low shuts down regulator.
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| MIC5156-MIC5157-MIC5158稳压控制器 | 制造商:未知厂家 制造商全称:未知厂家 功能描述: |
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