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LP3962ES-3.3 Datasheet(PDF) 5 Page - Texas Instruments

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Part No. LP3962ES-3.3
Description  1.5A Fast Ultra Low Dropout Linear Regulators
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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LP3962ES-3.3 Datasheet(HTML) 5 Page - Texas Instruments

 
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LP3962, LP3965
www.ti.com
SNVS066H – MAY 2000 – REVISED APRIL 2013
Operating Ratings
Input Supply Voltage (Operating), (1)
2.5V to 7.0V
Shutdown Input Voltage (Operating)
−0.3V to VIN+0.3V
Maximum Operating Current (DC)
1.5A
Operating Junction Temp. Range
−40°C to +125°C
(1)
The minimum operating value for VIN is equal to either [VOUT(NOM) + VDROPOUT] or 2.5V, whichever is greater.
Electrical Characteristics
LP3962/LP3965
Limits in standard typeface are for TJ = 25°C, and limits in boldface type apply over the full operating temperature range.
Unless otherwise specified: VIN = VO(NOM) + 1V, IL = 10 mA, COUT = 33µF, VSD = VIN-0.3V.
Symbol
Parameter
Conditions
Typ (1)
LP3962/5 (2)
Units
Min
Max
VO
Output Voltage Tolerance(3)
10 mA
≤ IL ≤ 1.5A
-1.5
+1.5
0
%
VOUT +1 ≤ VIN≤ 7.0V
-3.0
+3.0
VADJ
Adjust Pin Voltage (ADJ version)
10 mA
≤ IL ≤ 1.5A
1.198
1.234
1.216
V
VOUT +1.5V ≤ VIN≤ 7.0V
1.180
1.253
ΔV OL
Output Voltage Line Regulation
VOUT+1V<VIN<7.0V,
0.02
%
(3)
0.06
ΔVO/ ΔIOUT
Output Voltage Load
10 mA < IL < 1.5 A
0.04
%
Regulation(3)
0.09
VIN - VOUT
IL = 150 mA
38
45
55
Dropout Voltage(4)
mV
IL = 1.5 A
380
450
550
IL = 150 mA
4
9
10
Ground Pin Current In Normal
IGND
mA
Operation Mode
IL = 1.5 A
5
14
15
IGND
Ground Pin Current In Shutdown
VSD ≤ 0.2V
15
25
µA
Mode(5)
75
IO(PK)
Peak Output Current
See (6)
2.5
2.0
A
1.7
SHORT CIRCUIT PROTECTION
ISC
Short Circuit Current
4.5
A
OVER TEMPERATURE PROTECTION
Tsh(t)
Shutdown Threshold
165
°C
Tsh(h)
Thermal Shutdown Hysteresis
10
°C
SHUTDOWN INPUT
Output = High
VIN
VIN–0.3
VSDT
Shutdown Threshold
V
Output = Low
0
0.2
TdOFF
Turn-off delay
IL = 1.5 A
20
µs
(1)
Typical numbers are at 25°C and represent the most likely parametric norm.
(2)
Limits are 100% production tested at 25°C. Limits over the operating temperature range are specified through correlation using
Statistical Quality Control (SQC) methods. The limits are used to calculate TI's Average Outgoing Quality Level (AOQL).
(3)
Output voltage line regulation is defined as the change in output voltage from the nominal value due to change in the input line voltage.
Output voltage load regulation is defined as the change in output voltage from the nominal value due to change in load current. The line
and load regulation specification contains only the typical number. However, the limits for line and load regulation are included in the
output voltage tolerance specification.
(4)
Dropout voltage is defined as the minimum input to output differential voltage at which the output drops 2% below the nominal value.
Dropout voltage specification applies only to output voltages of 2.5V and above. For output voltages below 2.5V, the drop-out voltage is
nothing but the input to output differential, since the minimum input voltage is 2.5V.
(5)
This specification has been tested for
−40°C ≤ TJ ≤ 85°C since the temperature rise of the device is negligible under shutdown
conditions.
(6)
At elevated temperatures, devices must be derated based on package thermal resistance. The devices in TO-220 package must be
derated at
θjA = 50°C/W (with 0.5in
2, 1oz. copper area), junction-to-ambient (with no heat sink). The devices in the SFM/TO-263
surface-mount package must be derated at
θjA = 60°C/W (with 0.5in
2, 1oz. copper area), junction-to-ambient. The devices in SOT-223
package must be derated at
θjA = 90°C/W (with 0.5in
2, 1oz. copper area), junction-to-ambient.
Copyright © 2000–2013, Texas Instruments Incorporated
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