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參數(shù)資料
| 型號： | MIC5157 |
| 廠商： | Micrel Semiconductor,Inc. |
| 英文描述： | Super LDO Regulator Controller(超低壓差穩(wěn)壓器控制器) |
| 中文描述： | 超級LDO穩(wěn)壓器控制器（超低壓差穩(wěn)壓器控制器） |
| 文件頁數(shù)： | 3/11頁 |
| 文件大?。?/td> | 94K |
| 代理商： | MIC5157 |
MIC5156/5157/5158
Pin Description MIC5156
Micrel
3-114
March 1999
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 V
OUT
is more
than 8% below nominal output. Circuit has 3% hysteresis.
3
GND
Circuit ground.
4
V
P
N-channel Gate Drive Supply Voltage: User supplied voltage for driving the
gate of the external MOSFET.
5
V
DD
Supply Voltage (Input): Supply voltage connection. Connect sense resistor
(R
S
) to V
DD
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
external sense resistor (current limit), or connect to V
DD
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 Amplifier (Input): Connect to external resistive divider.
Pin Description MIC5157, MIC5158
Pin Number
Pin Name
Pin Function
1 (MIC5157)
5V
5V Configuration (Input): Connect to S (source) pin for 5V output.
1 (MIC5158)
EA
Error Amplifier (Input): Connect to external resistive divider to obtain adjust-
able output.
2 (MIC5157)
3.3V
3.3V Configuration (Input): Connect to S (source) pin for 3.3V output.
2 (MIC5158)
5V FB
5V Feedback (Input): Connect to EA for fixed 5V output.
3
FLAG
Output Voltage Flag (Output): Open collector is active (low) when V
OUT
is 8%
or more below its nominal value.
4
GND
Circuit ground.
5
V
CP
C2–
Voltage Tripler Output [Filter Capacitor]. Connect a 1 to 10
μ
F capacitor to ground.
6
Charge Pump Capacitor 2: Second stage of internal voltage tripler. Connect a
0.1
μ
F 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
0.1
μ
F capacitor from C1+ to C1–.
9
C1–
Charge Pump Capacitor 1: See C1+ pin 8.
10
V
DD
Supply Voltage (Input): Supply voltage connection. Connect sense resistor
(R
S
) to V
DD
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
external sense resistor (current limit), or connect to V
DD
and external MOSFET
drain (no current limit).
13 (MIC5157)
S
Source and 3.3V/5V Configuration: 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
resistive divider and source of external MOSFET.
14
EN
Enable (Input): TTL high enables regulator; TTL low shuts down regulator.
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| MIC5157YM TR | 功能描述:低壓差控制器 - LDO Super LDO Regulator-Selectable(Lead Free) RoHS:否 制造商:Micrel 最大輸入電壓:5.5 V 輸出電壓:Adjustable 輸出電流:10 mA 負(fù)載調(diào)節(jié): 輸出類型:Adjustable, Fixed 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-6 |
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