Datasheet

All Output Voltage Versions Electrical Characteristics
Specifications with standard typeface are for T
J
= 25˚C, and those in boldface type apply over full Operating Temperature
Range.V
IN
= 10V unless otherwise specified.
Symbol Parameter Conditions
Typical
(Note 6)
Limit
(Note 5)
Units
I
Q
Quiescent Current Shutdown Pin Floating (Device
On)
Device Not Switching
1.7
3
mA
mA(max)
I
QSD
Quiescent Current in
Shutdown Mode
Shutdown Pin Pulled Low 7
12/20
µA
µA(max)
R
DS(ON)
Switch ON Resistance I
SWITCH
= 1.5A 33
80
mΩ
mΩ(max)
R
SW(ON)
Switch On Resistance
(MOSFET ON Resistance +
Bonding Wire Resistance)
I
SWITCH
= 1.5A 72 mΩ
I
L
Switch Leakage Current 5 nA
V
BOOT
Bootstrap Regulator Voltage I
BOOT
=1mA
C
BOOT
=tbd
6.7
6.4
7.0
V
V(min)
V(max)
G
M
Error Amplifier
Transconductance
1250 µmho
A
V
Error Amplifier Voltage Gain 100
I
EA_SOURCE
Error Amplifier Source
Current
V
IN
= 4V, V
FB
= .9*V
OUT
,V
COMP
=2V
40
32/10
µA
µA(min)
I
EA_SINK
Error Amplifier Sink Current V
IN
= 4V, V
FB
= 1.1*V
OUT
,V
COMP
=2V
80
53/30
µA
µA(min)
V
EAH
Error Amplifier Output Swing
Upper Limit
V
IN
= 4V, V
FB
= .9*V
OUT
,V
COMP
=2V
2.70
2.50/2.40
V
V(min)
V
EAL
Error Amplifier Output Swing
Lower Limit
V
IN
= 4V, V
FB
= .9*V
OUT
,V
COMP
=2V
1.25
1.35/1.50
V
V(max)
F
OSC
Oscillator Frequency Measured at Switch Pin
V
IN
=4V
300
280/255
330/345
kHz
kHz(min)
kHz(max)
D
MAX
Maximum Duty Cycle V
IN
=4V 95
92
%
%(min)
I
SS
Soft-Start Current Voltage at the SS Pin = 1.4V 11
14
µA
µA(max)
V
OUTUV
V
OUT
Undervoltage Lockout
Threshold Voltage
81
76
84
%V
OUT
%V
OUT
(min)
%V
OUT
(max)
Hysteresis for V
OUTUV
5%V
OUT
V
OUTOV
V
OUT
Overvoltage Lockout
Threshold Voltage
108
106
114
%V
OUT
%V
OUT
(min)
%V
OUT
(max)
Hysteresis for V
OUTOV
5%V
OUT
I
LDELAY__
SOURCE
LDELAY Pin Source Current 5 µA
I
SHUTDOWN
Shutdown Pin Current Shutdown Pin Pulled Low 2.2
3.7/4.0
µA
µA(max)
V
SHUTDOWN
Shutdown Pin Threshold
Voltage
Rising Edge 0.6
0.25
0.9
V
V(min)
V(max)
T
SD
Thermal Shutdown
Temperature
165 ˚C
LM2655
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