MIC5159_06 Datasheet, PDF (18/23 Pages) Micrel Semiconductor – Programmable Current Limit μCap LDO Regulator Controller

Micrel, Inc.
Schematic G
Input/Output Combination Examples
Input
1.8V
Output
1.5V
Maximum Current
6A
U1 MIC5159BM6/YM6
MIC5159
6
5
4 ^{Max. Power}
Dissipation at 60°C T_A
3
2
Dropout
1
0
0 1 2 3 4 5 6 7 8 9 10
OUTPUT CURRENT (A)
Application Circuit
Si34403DY x2 SOA
Bill of Materials
Item
Part Number
Manufacturer
Description
Qty.
C1
GRM40 X7R 106 6.3
Murata⁽¹⁾
10µF, 6.3V Ceramic MLCC, Size 0805
1
C2012X5RR0J106M
TDK⁽²⁾
10µF, 6.3V Ceramic MLCC, Size 0805
C2,C3
GRM43 ER60J476K
Murata
47µF, 6.3V Ceramic MLCC, Size 1812
1
C4,C5,C6 C4532X5R0J476M
TDK
47µF, 6.3V Ceramic MLCC, Size 1812
R1
CRCW08051002
Vishay Dale⁽³⁾
10kΩ Resistor, Size 0805
1
R2
CRCW08059761
Vishay Dale
Output Voltage:2.5V; 9.76kΩ Resistor, Size 0805⁽⁴⁾
1
CRCW08052152
Vishay Dale
Output Voltage:1.8V; 21.5kΩ Resistor, Size 0805⁽⁴⁾
1
CRCW08054642
Vishay Dale
Output Voltage:1.5V; 46.4kΩ Resistor, Size 0805⁽⁴⁾
1
CRCW08058253
Vishay Dale
Output Voltage:1.25V; 825kΩ Resistor, Size 0805⁽⁴⁾
1
R3
CRCW080549R9 F
Vishay Dale
49.9Ω Resistor, Size 0805
1
Q1,Q2
Si4403DY
Vishay Siliconix⁽⁵⁾ P-Channel MOSFET SO-8
2
U1
MIC5159BM6/YM6
Micrel, Inc.⁽⁶⁾
Programmable Current Limit µCap LDO Regulator
1
Notes:
1. Murata Tel: [phone]
2. TDK Tel: [phone]
3. Vishay Dale Tel: [phone]
4. To calculate other output voltage values:
R1
R2 =
⎜⎛
⎜⎝
VOUT
1.235
⎟⎞
⎟⎠
−
1
5. Vishay Siliconix Tel: [phone]
6. Micrel, Inc. Tel: [phone]
June 2006
18
M9999-062706