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MIC5159 Datasheet(PDF) 21 Page - Micrel Semiconductor

Part # MIC5159
Description  PROGRAMMABLE CURRENT LIMIT UCAP LDO REGULATOR CONTROLLER
PDF  23 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC5159 Datasheet(HTML) 21 Page - Micrel Semiconductor

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April 2004
21
M9999-041204
MIC5159
Micrel
Input/Output Combination Examples
Input
Output
Maximum Current
3.3V
2.5V
7.5A
3.3V
1.8V
3.75A
3.3V
1.5V
3A
3.3V
1.25V
2.75A
2.5V
1.8V
8A
2.5V
1.5V
6A
2.5V
1.25V
4.5A
1.8V
1.25V
9.5A
Schematic J
VIN
U1 MIC5159BM6
Q1
SUB15P01-52
R1
10kW
5
1
3
GND
C1
10mF
6.3V
R2*
GND
C3
22mF
6.3V/10V
R3
49.9W
4
6
2
EN
IN
IS
GATE
FB
GND
VOUT
C2
22mF
6.3V/10V
Q2
SUB15P01-52
Q3
SUB15P01-52
Application Circuit
Bill of Materials
Item
Part Number
Manufacturer
Description
Qty.
C1
GRM40 X7R 106 6.3
Murata(1)
10
µF, 6.3V Ceramic MLCC, Size 0805
1
C2012X5RR0J106M
TDK(2)
10
µF, 6.3V Ceramic MLCC, Size 0805
C2, C3
GRM42-2 X5R 226K 6.3
Murata
22
µF, 6.3V Ceramic MLCC, Size 1210
1
C3225X5R1A226M
TDK
22
µF, 10V Ceramic MLCC, Size 1210
R1
CRCW08051002
Vishay Dale(3)
10k
Ω Resistor, Size 0805
1
R2
CRCW08059761
Vishay Dale
Output Voltage: 2.5V; 9.76k
Ω Resistor, Size 0805(4)
1
CRCW08052152
Vishay Dale
Output Voltage: 1.8V; 21.5k
Ω Resistor, Size 0805(4)
1
CRCW08054642
Vishay Dale
Output Voltage: 1.5V; 46.4k
Ω Resistor, Size 0805(4)
1
CRCW08058253
Vishay Dale
Output Voltage: 1.25V; 825k
Ω Resistor, Size 0805(4)
1
R3
CRCW080549R9 F
Vishay Dale
49.9
Ω Resistor, Size 0805
1
Q1, Q2
SUB15P01-52
Vishay Siliconix(5)
P-Channel MOSFET TO-263
3
Q3
U1
MIC5159BM6
Micrel, Inc.(6)
Programmable Current Limit
µCap LDO Regulator
1
Notes:
1. Murata tel: 949-916-4000
2. TDK tel: 1-888-835-6646
3. Vishay Dale tel: 402-563-6866
4. To calculate other output voltage values:
R2
R1
V
1.235
OUT
=


– 1
5. Vishay Siliconix tel: 402-563-6866
6. Micrel, Inc. tel: 408-944-0800
0
1
2
3
4
5
6
02468
10
12
OUTPUT CURRENT (A)
Dropout
Max. Power
Dissipation at 60
°C T
A
SUB15P01-52 x3 SOA



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