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LM2990T-5.0 Datasheet(PDF) 3 Page - Texas Instruments

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Part # LM2990T-5.0
Description  LM2990 Negative Low Dropout Regulator
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM2990T-5.0 Datasheet(HTML) 3 Page - Texas Instruments

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LM2990
www.ti.com
SNVS093D – JUNE 1999 – REVISED APRIL 2013
Operating Ratings
(1)
Junction Temperature Range (TJ)
−40°C to +125°C
Maximum Input Voltage (Operational)
−26V
(1)
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for
which the device is intended to be functional, but do not ensure specific performance limits. For ensured specifications and test
conditions, see the Electrical Characteristics.
Electrical Characteristics
VIN = −5V + VO(NOM)
(1), I
O = 1A, CO = 47 μF, unless otherwise specified. Boldface limits apply over the entire operating
temperature range,
−40°C ≤ TJ ≤ 125°C, all other limits apply for TJ = 25°C.
LM2990-5.0
LM2990-5.2
Units
Parameter
Conditions
(Limit)
Typ(2)
Limit(3)
Typ(2)
Limit(3)
Output Voltage (VO)
−4.90
−5.10
V (max)
5 mA
≤ IO ≤ 1A
−5.10
−5.30
mV (min)
−5
−5.2
V
5 mA
≤ IO ≤ 1A
−4.75
−4.94
V (max)
−5.25
−5.46
V (min)
Line Regulation
IO = 5 mA,
4
40
4
40
mV (max)
VO(NOM) −1V > VIN > −26V
Load Regulation
50 mA
≤ IO ≤ 1A
1
40
1
40
mV (max)
Dropout Voltage
IO = 0.1A, ΔVO ≤ 100 mV
0.1
0.3
0.1
0.3
V (max)
IO = 1A, ΔVO ≤ 100 mV
0.6
1
0.6
1
V (max)
Quiescent Current (Iq)
IO ≤ 1A
1
5
1
5
mA (max)
IO = 1A, VIN = VO(NOM)
9
50
9
50
mA (max)
Short Circuit Current
RL = 1Ω
(4)
1.8
1.5
1.8
1.5
A (min)
Maximum Output Current
See(4)
1.8
1.5
1.8
1.5
A (min)
Ripple Rejection
Vripple = 1 Vrms,
58
50
58
50
dB (min)
ƒripple = 1 kHz, IO = 5 mA
Output Noise Voltage
10 Hz–100 kHz, IO = 5 mA
250
750
250
750
μV (max)
Long Term Stability
1000 Hours
2000
2000
ppm
(1)
VO(NOM) is the nominal (typical) regulator output voltage, −5V, −5.2V, −12V or −15V.
(2)
Typicals are at TJ = 25°C and represent the most likely parametric norm.
(3)
Limits are specified and 100% production tested.
(4)
The short circuit current is less than the maximum output current with the
−12V and −15V versions due to internal foldback current
limiting. The
−5V and −5.2V versions, tested with a lower input voltage, does not reach the foldback current limit and therefore conducts
a higher short circuit current level. If the LM2990 output is pulled above ground, the maximum allowed current sunk back into the
LM2990 is 1.5A.
Copyright © 1999–2013, Texas Instruments Incorporated
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