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LM2608 数据表(PDF) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部件名 LM2608
功能描述  400mA Sub-miniature, High Efficiency, Programmable DC-DC Converter with Linear Mode
Download  18 Pages
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制造商  NSC [National Semiconductor (TI)]
网页  http://www.national.com
标志 NSC - National Semiconductor (TI)

LM2608 数据表(HTML) 4 Page - National Semiconductor (TI)

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Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
PVIN, VDD, to SGND
−0.2V to +6V
PGND to SGND
−0.2V to +0.2V
EN, SYNC/MODE, VSEL to SGND
−0.2V to +6V
FB, SW
(GND −0.2V) to
(VDD +0.2V)
Storage Temperature Range
−45˚C to +150˚C
Lead temperature
(Soldering, 10 sec.)
260˚C
Junction Temperature (Note 2)
−25˚C to 125˚C
Minimum ESD Rating
Human body model, C = 100pF, R =
1.5 k
±2.0kV
Thermal Resistance (
θ
JA)
LM2608ATL(Note 3)
140˚C/W
Electrical Characteristics
Specifications with standard typeface are for T
A =TJ = 25˚C, and those in bold face type apply over the full Operating Tem-
perature Range (T
A =TJ = −25˚C to +85˚C). Unless otherwise specified, PVIN = VDD = EN = SYNC = 3.6V, VSEL = 0V,
VREF = 1.35V.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
IN
Input Voltage Range (Note
4)
PVIN = VDD, VSEL = V
IN
2.8
5.5
V
V
FB
Feedback Voltage
PWM Mode
SYNC/MODE = V
IN(Note 5)
LM2608ATL-1.3, VSEL = 0V
1.287
1.30
1.313
V
LM2608ATL-1.3, VSEL = V
IN
1.485
1.50
1.515
LM2608ATL-1.8, VSEL = 0V
1.485
1.50
1.515
LM2608ATL-1.8, VSEL = V
IN
1.782
1.80
1.818
V
FB, LIN
Feedback Voltage
LIN Mode
(SYNC/MODE =0V)
V
IN= 3.6V
I
OUT = 100µA
LM2608ATL-1.3, VSEL = 0V
1.261
1.30
1.339
V
LM2608ATL-1.3, VSEL = V
IN
1.455
1.50
1.545
LM2608ATL-1.8, VSEL = 0
1.455
1.50
1.545
LM2608ATL-1.8, VSEL = V
IN
1.746
1.80
1.854
∆V
OUT_LDO
Line Regulation
I
OUT = 100µA
0.1
%/V
Load Regulation
V
IN= 3.6V, IOUT = 10µA to
1.5mA
1.0
%/mA
V
HYST
OVP Comparator Hysteresis
Voltage
(Note 6)
PWM Mode
45
75
mV
I
SHDN
Shutdown Supply Current
EN = 0V
0.02
3
µA
I
Q, PWM
DC Bias Current into VDD
(PWM Mode)
FB=2V
SYNC/MODE =V
IN
590
725
µA
I
Q, LIN
DC Bias Current into VDD
(LDO Mode)
SYNC/MODE = 0V,
I
OUT =0mA
20
30
R
DSON (P)
Pin-Pin Resistance for P
FET
370
500
m
R
DSON (N)
Pin-Pin Resistance for N
FET
330
500
m
R
DSON , TC
FET Resistance
Temperature Coefficient
0.5
%/C
I
SC, LDO
Short Circuit (LDO)
V
OUT = GND
SYNC/MODE = 0V
3
6
8
mA
I
lim
Switch Peak Current Limit
(Note 7)
LM2608ATL-1.3
383
460
518
mA
LM2608ATL-1.8
510
620
690
V
EN_H
EN Positive Going
Threshold Voltage
(Note 8)
0.80
1.3
V
V
EN_L
EN Negative Going
Threshold Voltage
(Note 8)
0.4
0.75
V
www.national.com
4


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