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LDS3985XX Datasheet, PDF (7/20 Pages) STMicroelectronics – Ultra low drop-low noise BiCMOS 300 mA voltage regulator for use with very low ESR output capacitor
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LDS3985xx
5
Electrical characteristics
Electrical characteristics
TJ = 25 °C, VI = VO(NOM) + 0.5 V, CI = 1 µF, CO = 2.2 µF, CBYP = 33 nF, IO = 1 mA,
VINH = 1.4 V, unless otherwise specified.
Table 5.
Symbol
Electrical characteristics for LDS3985xx
Parameter
Test conditions
Min. Typ. Max. Unit
VI Operating input voltage
VO Output voltage < 2.5 V
IO = 1 mA
TJ = - 40 to 125 °C
VO Output voltage ≥ 2.5 V
IO = 1 mA
TJ= - 40 to 125 °C
ΔVO Line regulation (1)
VI = VO(NOM) + 0.5 to 6 V,
TJ = - 40 to 125 °C
VO = 4.7 to 5 V
ΔVO Load regulation
IO = 1 mA to 300 mA, VO ≤ 2.5 V
TJ = - 40 to 125 °C
ΔVO Load regulation
IO = 1 mA to 300 mA, VO ≥ 2.5 V
TJ = - 40 to 125 °C
ΔVO
Output AC line regulation VI = VO(NOM) + 1 V, IO = 300 mA,
(2)
tR = tF = 30 µs
IO = 0
Quiescent current
IO = 0, TJ = - 40 to 125 °C
IQ
ON MODE: VINH = 1.24 V IO = 0 to 300 mA
IO = 0 to 300 mA, TJ = - 40 to 125 °C
OFF MODE: VINH = 0.4 V
TJ = - 40 to 125 °C
IO = 1 mA
IO = 1 mA, TJ = -40 to 125 °C
VDROP Dropout voltage (3)
IO = 150 mA
IO = 150 mA, TJ = - 40 to 125 °C
IO = 300 mA
IO = 300 mA, TJ = - 40 to 125 °C
ISC Short circuit current
RL = 0
SVR
Supply voltage rejection
VI = VO(NOM)+0.25 V ±
VRIPPLE = 0.1 V, IO = 50 mA
For VO(NOM) < 2.5 V,
VI = 2.55 V
f = 1 kHz
f = 10 kHz
IO(PK) Peak output current
VO ≥ VO(NOM) - 5 %
2.5
6
V
-50
50
mV
-75
75
-2
2
% of
-3
3 VO(NOM)
-0.1
-0.19
0.1
%/V
0.19
0.005 0.01 %/mA
0.0008 0.004 %/mA
5
85
150
200
300
0.003
1.5
0.4
2
60
100
150
250
600
55
50
mVPP
µA
mV
mA
dB
300 550
mA
Doc ID 11039 Rev 7
7/20
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