MIC5158YM Micrel Inc, MIC5158YM Datasheet - Page 3

• Manufacturer Part Number: MIC5158YM
• Description: IC CTRLR REG LDO 5V/ADJ 14SOIC
• Manufacturer: Micrel Inc
• Type: Positive Fixed or Adjustabler

Specifications of MIC5158YM

• Number Of Outputs: 1
• Voltage - Output: 5V, 1.3 ~ 36 V
• Current - Supply: 4.5mA
• Voltage - Input: 3 ~ 36 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 14-SOIC (3.9mm Width), 14-SOL
• Output Voltage Adjustable Range: 1.3V To 36V
• Output Voltage Fixed: 5V
• No. Of Pins: 14
• Output Current: 4.5mA
• Operating Temperature Range: -40°C To +85°C
• Termination Type: SMD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 576-1243

Pin Description MIC5156
Pin Description MIC5157, MIC5158
August 2005
MIC5156/5157/5158
8 (adjustable)
13 (MIC5157)
13 (MIC5158)
Pin Number
Pin Number
1 (MIC5157)
1 (MIC5158)
2 (MIC5157)
2 (MIC5158)
8 (3.3V, 5V)
10
12
14
11
1
2
3
4
5
6
7
3
4
5
6
7
8
9
Pin Name
Pin Name
FLAG
5V FB
FLAG
GND
GND
3.3V
V
V
C2–
C2+
C1+
C1–
V
EN
EN
EA
5V
EA
V
G
D
S
G
D
S
S
DD
CP
DD
P
Pin Function
Enable (Input): TTL high enables regulator; TTL low shuts down regulator.
Output Flag (Output): Open collector output is active (low) when V
than 8% below nominal output. Circuit has 3% hysteresis.
Circuit ground.
N-channel Gate Drive Supply Voltage: User supplied voltage for driving the
gate of the external MOSFET.
Supply Voltage (Input): Supply voltage connection. Connect sense resis-
tor (R
ground near device.
Gate (Output): Drives the gate of the external MOSFET.
Drain and Current Limit (Input): Connect to external MOSFET drain and ex-
ternal sense resistor (current limit), or connect to V
drain (no current limit).
Source (Input): Top of internal resistive divider chain. Connect directly to the
load for best load regulation.
Error Amplifier (Input): Connect to external resistive divider.
Pin Function
5V Configuration (Input): Connect to S (source) pin for 5V output.
Error Amplifier (Input): Connect to external resistive divider to obtain adjust-
able output.
3.3V Configuration (Input): Connect to S (source) pin for 3.3V output.
5V Feedback (Input): Connect to EA for fixed 5V output.
Output Voltage Flag (Output): Open collector is active (low) when V
or more below its nominal value.
Circuit ground.
Voltage Tripler Output [Filter Capacitor]. Connect a 1 to 10µF capacitor to ground.
Charge Pump Capacitor 2: Second stage of internal voltage tripler. Connect a
0.1µF capacitor from C2+ to C2–.
Charge Pump Capacitor 2: See C2– pin 6.
Charge Pump Capacitor 1: First stage of internal voltage tripler. Connect a
0.1µF capacitor from C1+ to C1–.
Charge Pump Capacitor 1: See C1+ pin 8.
Supply Voltage (Input): Supply voltage connection. Connect sense resis-
tor (R
ground near device.
Gate (Output): Connect to External MOSFET gate.
Drain and Current Limit (Input): Connect to external MOSFET drain and ex-
ternal sense resistor (current limit), or connect to V
drain (no current limit).
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.
Source (Input): Top of internal resistor chain. Connect to top of external resis-
tive divider and source of external MOSFET.
Enable (Input): TTL high enables regulator; TTL low shuts down regulator.
S
S
) to V
) to V
3
DD
DD
if current limiting used. Connect supply bypass capacitor to
if current limiting used. Connect supply bypass capacitor to
DD
DD
and external MOSFET
and external MOSFET
MIC5156/5157/5158
OUT
OUT
Micrel, Inc.
is more
is 8%