lm2655mtcx-adj National Semiconductor Corporation, lm2655mtcx-adj Datasheet - Page 5

• Manufacturer Part Number: lm2655mtcx-adj
• Description: 2.5a High Efficiency Synchronous Switching Regulator
• Manufacturer: National Semiconductor Corporation

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