SI91821 Datasheet, PDF (2/10 Pages) Vishay Siliconix – Micropower 300-mA CMOS LDO Regulator With Error Flag

Si91821
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 . . . . . . . . . . . . . . . . . . . . . . . . . . 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 (Package)^a
8-Pin MSOP^b . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 666 mW
Thermal Impedance (Q_JA)^a
8-Pin MSOP^b . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185_C/W
Notes
a. Device mounted with all leads soldered or welded to PC board.
b. Derate 10 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.35 V to 6 V
Output Voltage, V_OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 to 5.0 V
SD Input Voltage, V_SD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 V to V_IN
I_OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 300 mA
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 = 0.033 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
Input Voltage
Output Voltage
Output Voltage Accuracy
(to stated output voltage)
V_IN
V_OUT
V_OUT
Adjustable Version
1 mA v I_OUT v 300 mA
Feedback Voltage (ADJ Version)
V_SET
Line Regulation
(Except 5-V Version)
Line Regulation (5-V Version)
Line Regulation (ADJ Version)
Dropout Voltage^d
Ground Pin Current
Shutdown Supply Current
Peak Output Current
Output Noise Voltage
Ripple Rejection
DV_OUT 100
V_IN V_OUT(nom)
V_IN − V_OUT
I_GND
I_IN(off)
I_O(peak)
e_N
DV_OUT/DV_IN
From V_IN = V_OUT(nom) + 1 V
to V_OUT(nom) + 2 V
From V_IN = 5.5 V to 6 V
V_OUT = 1.5 V From V_IN = 2.5 V to 3.5 V
V_OUT = 5 V From V_IN = 5.5 V to 6 V
I_OUT = 10 mA
I_OUT = 200 mA
I_OUT = 300 mA
I_OUT = 0 mA
I_OUT = 200 mA
I_OUT = 300 mA
V_SD = 0 V
V_OUT w 0.95 x V_OUT(nom), t_pw = 2 ms
BW = 10 Hz to 100 kHz
I_OUT = 150 mA
w/o C_NOISE
C_NOISE = 0.1 mF
BW = 10 to 100 kHz
I_OUT = 10 mA
C_NOISE = 33 nF
f = 1 kHz
I_OUT = 150 mA
f = 10 kHz
f = 100 kHz
www.vishay.com
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2.35
1.5
−1.5
−2.5
1.191
1.179
−0.18
−0.18
−0.18
−0.18
500
1.215
5
80
120
150
500
600
0.1
260
37
54
60
50
40
6.0
5.0
1.5
2.5
1.239
1.251
0.18
0.18
0.18
0.18
20
135
200
270
V
%
V_OUT(nom)
V
%/V
mV
mA
1
mA
mV (rms)
dB
Document Number: 71614
S-51147–Rev. E, 20-Jun-05