Datasheet

LM2651
SNVS032D –FEBRUARY 2000–REVISED APRIL 2013 www.ti.com
LM2651-ADJ System Parameters
(V
OUT
= 2.5V unless otherwise specified)
Symbol Parameter Conditions Typical Limit Units
V
FB
Feedback Voltage I
LOAD
= 900 mA 1.238 V
1.200
V(min)
1.263
V(max)
V
OUT
Output Voltage Line Regulation V
IN
= 4V to 14V 0.2 %
I
LOAD
= 900 mA
V
OUT
Output Voltage Load Regulation I
LOAD
= 10 mA to 1.5A 1.3 %
V
IN
= 5V
V
OUT
Output Voltage Load Regulation I
LOAD
= 200 mA to 1.5A 0.3 %
V
IN
= 5V
V
HYST
Sleep Mode Output Voltage 24 mV
Hysteresis
All Output Voltage Versions
Specifications in standard type face are for T
J
= 25°C and those with boldface type apply over full operating junction
temperature range. V
IN
=10V unless otherwise specified.
Symbol Parameter Conditions Typical Limit Units
I
Q
Quiescent Current 1.6 mA
2.0
mA(max)
I
QSD
Quiescent Current in Shutdown Shutdown Pin Pulled Low 7 µA
Mode 12/20 µA(max)
R
SW(ON)
High-Side or Low-Side Switch I
SWITCH
= 1A 110 mΩ
On Resistance (MOSFET On
Resistance + Bonding Wire
Resistance)
R
DS(ON)
MOSFET On Resistance (High- I
SWITCH
= 1A 75 mΩ
Side or Low-Side) 130 mΩ(max)
I
L
Switch Leakage Current - High 130 nA
Side
Switch Leakage Current - Low 130 nA
Side
V
BOOT
Bootstrap Regulator Voltage I
BOOT
= 1 mA 6.75 V
6.45/6.40 V(min)
6.95/7.00 V(max)
G
M
Error Amplifier 1250 µmho
Transconductance
V
INUV
V
IN
Undervoltage Lockout Rising Edge 3.8 3.95 V
Threshold Voltage V(max)
V
UV-HYST
Hysteresis for the Undervoltage 210 mV
Lockout
I
CL
Switch Current Limit V
IN
= 5V 2 A
1.55 A(min)
2.60 A(max)
I
SM
Sleep Mode Threshold Current V
IN
= 5V 100 mA
A
V
Error Amplifier Voltage Gain 100 V/V
I
EA_SOURCE
Error Amplifier Source Current 40 µA
25/15 µA(min)
I
EA_SINK
Error Amplifier Sink Current 65 µA
30 µA(min)
V
EAH
Error Amplifier Output Swing 2.70 V
Upper Limit 2.50/2.40 V(min)
V
EAL
Error Amplifier Output Swing 1.25 V
Lower Limit 1.35/1.50 V(max)
V
D
Body Diode Voltage I
DIODE
= 1.5A 1 V
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