參數(shù)資料
型號(hào)： LM261J
英文描述： Analog Comparator
中文描述： 模擬比較器
文件頁(yè)數(shù)： 4/19頁(yè)
文件大?。?/td> 2317K
代理商： LM261J
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, VID0, VID1 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
)
LM2612ABL/LM2612ATL &
LM2612BBL/LM2612BTL(Note 3)
260C
25C to 125C
±
2kV
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, VID0 = VID1 =
0V.
Symbol
V
IN
Parameter
Conditions
Min
Typ
Max
Units
Input Voltage Range (Note
4)
PVIN = VDD = VID1 = V
IN
,
VID0 = 0V
VID0 = V
IN
, VID1 = V
IN
VID0 = V
IN
, VID1 = 0V
VID0 = 0V, VID1 = 0V
VID0 = 0V, VID1 = V
IN
PFM Mode (SYNC = 0V)
2.8
5.5
V
V
FB
Feedback Voltage
(Note 5)
1.029
1.274
1.470
1.764
1.05
1.30
1.50
1.8
1.071
1.326
1.530
1.836
V
V
HYST
PFM Comparator Hysteresis
Voltage
(Note 6)
Shutdown Supply Current
DC Bias Current into VDD
25
mV
I
SHDN
I
Q1
EN = 0V
No switching, PFM mode
(SYNC/MODE = 0V)
No switching, PWM mode
(SYNC/MODE = V
IN
)
0.02
3
μA
160
195
μA
I
Q2
605
725
R
DSON (P)
Pin-Pin Resistance for P
FET
Pin-Pin Resistance for N
FET
FET Resistance
Temperature Coefficient
Switch Peak Current Limit
(Note 7)
395
550
m
R
DSON (N)
325
500
m
R
DSON , TC
0.5
%/C
I
lim
LM2612ABL/LM2612ATL
LM2612BBL/LM2612BTL
510
400
710
710
850
980
mA
V
EN_H
EN Positive Going
Threshold Voltage
EN Negative Going
Threshold Voltage
SYNC/MODE Positive
Going Threshold Voltage
SYNC/MODE Negative
Going Threshold Voltage
V
ID0
, V
ID1
Positive Going
Threshold Voltage
V
ID0
, V
ID1
Negative Going
Threshold Voltage
VID1, VID0 Pull Down
Current
0.95
1.3
V
V
EN_L
0.4
0.80
V
V
SYNC_H
0.95
1.3
V
V
SYNC_L
0.4
0.84
V
V
ID_H
0.92
1.3
V
V
ID_L
0.4
0.83
V
I
VID
VID1, VID0 = 3.6V
1.8
3.0
μA
L
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