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參數資料
| 型號： | LM2608ATLX-1.8 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 400mA Sub-miniature, High Efficiency, Programmable DC-DC Converter with Linear Mode |
| 中文描述： | 0.69 A SWITCHING REGULATOR, 690 kHz SWITCHING FREQ-MAX, PBGA10 |
| 封裝： | MICRO, SMD-10 |
| 文件頁數： | 4/18頁 |
| 文件大?。?/td> | 728K |
| 代理商： | LM2608ATLX-1.8 |
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
(Note 1)
PVIN, VDD, to SGND
PGND to SGND
EN, SYNC/MODE, VSEL to SGND
FB, SW
0.2V to +6V
0.2V to +0.2V
0.2V to +6V
(GND 0.2V) to
(VDD +0.2V)
45C to +150C
Storage Temperature Range
Lead temperature
(Soldering, 10 sec.)
Junction Temperature (Note 2)
Minimum ESD Rating
Human body model, C = 100pF, R =
1.5 k
Thermal Resistance (
θ
JA
)
LM2608ATL(Note 3)
260C
25C to 125C
±
2.0kV
140C/W
Electrical Characteristics
Specifications with standard typeface are for T
A
= T
J
= 25C, and those in
bold face type
apply over the full Operating Tem-
perature Range (T
A
= T
J
= 25C to +85C). Unless otherwise specified, PVIN = VDD = EN = SYNC = 3.6V, VSEL = 0V,
VREF = 1.35V.
Symbol
V
IN
Parameter
Conditions
Min
Typ
Max
Units
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
LM2608ATL-1.3, VSEL = V
IN
LM2608ATL-1.8, VSEL = 0V
LM2608ATL-1.8, VSEL = V
IN
LM2608ATL-1.3, VSEL = 0V
1.287
1.485
1.485
1.782
1.30
1.50
1.50
1.80
1.313
1.515
1.515
1.818
V
V
FB, LIN
Feedback Voltage
LIN Mode
(SYNC/MODE =0V)
V
IN
= 3.6V
I
OUT
= 100μA
Line Regulation
Load Regulation
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
0.1
1.0
1.854
V
OUT_LDO
I
OUT
= 100μA
V
IN
= 3.6V, I
OUT
= 10μA to
1.5mA
PWM Mode
%/V
%/mA
V
HYST
OVP Comparator Hysteresis
Voltage
(Note 6)
Shutdown Supply Current
DC Bias Current into VDD
(PWM Mode)
DC Bias Current into VDD
(LDO Mode)
Pin-Pin Resistance for P
FET
Pin-Pin Resistance for N
FET
FET Resistance
Temperature Coefficient
Short Circuit (LDO)
45
75
mV
I
SHDN
I
Q, PWM
EN = 0V
FB = 2V
SYNC/MODE =V
IN
SYNC/MODE = 0V,
I
OUT
= 0 mA
0.02
3
μA
590
725
μA
I
Q, LIN
20
30
R
DSON (P)
370
500
m
R
DSON (N)
330
500
m
R
DSON , TC
0.5
%/C
I
SC, LDO
V
OUT
= GND
SYNC/MODE = 0V
LM2608ATL-1.3
LM2608ATL-1.8
3
6
8
mA
I
lim
Switch Peak Current Limit
(Note 7)
383
510
460
620
518
690
mA
V
EN_H
EN Positive Going
Threshold Voltage
(Note 8)
EN Negative Going
Threshold Voltage
(Note 8)
0.80
1.3
V
V
EN_L
0.4
0.75
V
L
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