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LM2653 Datasheet(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
No. de pieza LM2653
Descripción Electrónicos  1.5A High Efficiency Synchronous Switching Regulator
Download  13 Pages
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Fabricante Electrónico  NSC [National Semiconductor (TI)]
Página de inicio  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2653 Datasheet(HTML) 3 Page - National Semiconductor (TI)

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Electrical Characteristics (Continued)
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 5)
Limit
(Note 4)
Units
V
BOOT
Bootstrap Regulator Voltage
I
BOOT = 1 mA
6.75
6.45/6.40
6.95/7.00
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 = 3.6V, VFB = 1.17V, VCOMP =2V
40
25/15
µA
µA(min)
I
EA_SINK
Error Amplifier Sink Current
V
IN = 3.6V, VFB = 1.31V, VCOMP =2V
65
30
µA
µA(min)
V
EAH
Error Amplifier Output Swing
Upper Limit
V
IN = 4V, VFB = 1.17V
2.70
2.50/2.40
V
V(min)
V
EAL
Error Amplifier Output Swing
Lower Limit
V
IN = 4V, VFB = 1.31V
1.25
1.35/1.50
V
V(max)
V
D
Body Diode Voltage
I
DIODE = 1.5A
1
V
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
7
14
µA
µA(min)
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
3%V
OUT
I
LDELAY__
SOURCE
LDELAY Pin Source Current
5
µA
I
PGOOD__SINK
PGOOD Pin Sink Current
V
PGOOD = 0.4V
15
mA(max)
I
PGOOD__LEAKAGE
PGOOD Pin Leakage
Current
V
PGOOD =5V
50
nA
I
SHUTDOWN
Shutdown Pin Current
Shutdown Pin Pulled Low
2.2
0.8/0.5
3.7/4.0
µA
µA(min)
µA(max)
V
SHUTDOWN
Shutdown Pin Threshold
Voltage
Rising Edge
0.6
0.3
0.9
V
V(min)
V(max)
T
SD
Thermal Shutdown
Temperature
165
˚C
T
SD_HYST
Thermal Shutdown
Hysteresis Temperature
25
˚C
Note 1: Absolute Maxmum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but device parameter specifications may not be guaranteed under these conditions. For guaranteed specifications and test conditions, see
the Electrical Characteristics.
www.national.com
3


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