SI9185 Datasheet, PDF (2/12 Pages) Vishay Siliconix – Micropower 500-mA CMOS LDO Regulator

Si9185
Vishay Siliconix
ABSOLUTE MAXIMUM RATINGS
Input Voltage, V_IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5 V
SD Input Voltage, V_SD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to V_IN
Output Current, I_OUT . . . . . . . . 500 mA Continuous, Short Circuit Protected
Output Voltage, V_OUT . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to V_O(nom) + 0.3 V
Maximum Junction Temperature, T_J(max) . . . . . . . . . . . . . . . . . . . . . . . 150_C
Storage Temperature, T_STG . . . . . . . . . . . . . . . . . . . . . . . . . . –55_C to 150_C
ESD (Human Body Model) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 kV
Power Dissipation^b . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5 W
Thermal Impedance (Q_JA)^a
(R_{QJA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50_C/W}
(R_{QJc) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4_C/W}
Notes
a. Device mounted with all leads soldered or welded to PC board. (PC
board—2” x 2”, 4-layer, FR4, 0.25 square inch spreading copper)
b. Derate 20 mW/_C above T_A = 25_C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation
of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
RECOMMENDED OPERATING RANGE
Input Voltage, V_IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 V to 6 V
Output Voltage, V_OUT (Adjustable Version) . . . . . . . . . . . . . . . 1.215 V to 5 V
R2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 kW to 150 kW
Operating Ambient Temperature, T_A . . . . . . . . . . . . . . . . . . . . –40_C to 85_C
Operating Junction Temperature, T_J . . . . . . . . . . . . . . . . . . . –40_C to 125_C
C_IN = 2.2 mF, C_OUT = 2.2 mF (ceramic, X5R or X7R type) , C_NOISE = 0.1 mF (ceramic)
C_OUTRange = 1 mF to 10 mF ("10%, x5R or x7R type)
C_IN w C_OUT
SPECIFICATIONS
Parameter
Symbol
Test Conditions
Unless Otherwise Specified
V_IN = V_OUT(nom) + 1 V, I_OUT = 1 mA
C_IN = 2.2 mF, C_OUT = 2.2 mF, V_SD = 1.5 V
Limits
–40 to 85_C
Temp^a Min^b Typ^c Max^b
Unit
Output Voltage Range
Output Voltage Accuracy
(Fixed Versions)
Feedback Voltage (ADJ Version)
V_OUT
V_ADJ
Line Regulation
(V_ADJ v V_OUT v 4 V)
Line Regulation (4 V V_OUT v 5 V)
DV_OUT 100
V_IN V_OUT
Adjustable Version
1 mA v I_OUT v 500 mA
From V_IN = V_OUT + 1 V
to V_OUT + 2 V
From V_IN = 5.5 V to 6 V
Full
Room
Full
Room
Full
1.215
–1.5
–2.5
1.191
1.179
1.215
5
1.5
2.5
1.239
1.251
V
% V_O(nom)
V
Full
–0.18
Full
–0.18
0.18
%/V
0.18
www.vishay.com
2
Document Number: 71765
S-20641—Rev. B, 06-May-02