LP2951-33-Q1 Datasheet, PDF (3/30 Pages) Texas Instruments – Adjustable Micropower Voltage Regulators With Shutdown

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5 Pin Configuration and Functions
LP2951-33-Q1, LP2951-50-Q1
SLVSAW6E – JUNE 2011 – REVISED NOVEMBER 2014
D Package
8-Pin SOIC
LP2591-50-Q1 Top View
OUTPUT 1
SENSE ²
SHUTDOWN ³
GND ⁴
8 INPUT
7 FEEDBACK
6 V_TAP
5 ERROR
DRG Package
8-Pin WSON With Exposed Thermal Pad
Top View
OUTPUT
SENSE
SHUTDOWN
GND
1
8
2 _Thermal 7
3
6
4
5
INPUT
FEEDBACK
V
TAP
ERROR
NAME
ERROR
PIN
NO.
5
FEEDBACK
7
GND
4
INPUT
8
OUTPUT
1
SENSE
2
SHUTDOWN
3
V_TAP
6
TYPE
O
I
—
I
O
I
I
O
Pin Functions
DESCRIPTION
Active-low open-collector error output. Goes low when V_OUT drops by 6% of its
nominal value.
Determines the output voltage. Connect to V_TAP (with OUTPUT tied to SENSE)
to output the fixed voltage corresponding to the part version, or connect to a
resistor divider to adjust the output voltage.
Ground
Supply input
Voltage output.
Senses the output voltage. Connect to OUTPUT (with FEEDBACK tied to V_TAP)
to output the voltage corresponding to the part version.
Active-high input. Shuts down the device.
Tie to FEEDBACK to output the fixed voltage corresponding to the part version.
6 Specifications
6.1 Absolute Maximum Ratings⁽¹⁾
over operating free-air temperature range (unless otherwise noted)
V_IN
V_SHDN
V_FDBK
T_J
Input voltage range
SHUTDOWN input voltage range
ERROR comparator output voltage range⁽²⁾
FEEDBACK input voltage range^{(2) (3)}
Operating virtual-junction temperature
MIN
MAX
UNIT
–0.3
35
V
–1.5
35
V
–1.5
30
V
–1.5
30
V
150
°C
(1) 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 under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) May exceed input supply voltage
(3) If load is returned to a negative power supply, the output must be diode clamped to GND.
6.2 Handling Ratings
MIN
T_stg
Storage temperature range
–65
Human body model (HBM), per AEC Q100-002⁽¹⁾⁽²⁾
0
V_(ESD) Electrostatic discharge
Charged device model (CDM), per
Corner pins (1, 4, 8,
and 5)
0
AEC Q100-011
Other pins
0
(1) AEC Q100-002 indicates HBM stressing is done in accordance with the ANSI/ESDA/JEDEC JS-001 specification.
(2) LP2951-50QDRQ1 Feedback pin survives up to 1500V HBM
MAX
150
2000
1000
1000
UNIT
°C
V
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