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LM2612 Datasheet(Fiches technique) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Numéro de pièce LM2612
Description  400mA Sub-miniature, Programmable, Step-Down DC-DC Converter for Ultra Low-Voltage Circuits
Télécharger  19 Pages
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Fabricant  NSC [National Semiconductor (TI)]
Site Internet  http://www.national.com
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 3 page
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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, VID0, VID1 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
±2.5kV
Thermal Resistance (
θ
JA)
LM2612ABP & LM2612BBP (Note 3)
170˚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, VID0 = VID1 =
0V.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
IN
Input Voltage Range (Note
5)
PVIN = VDD = VID1 = V
IN,
VID0 = 0V
2.8
5.5
V
V
FB
Feedback Voltage
(Note 6)
VID0 = V
IN, VID1 = VIN
1.00
1.05
1.10
V
VID0 = V
IN, VID1 = 0V
1.274
1.30
1.326
VID0 = 0V, VID1 = 0V
1.470
1.50
1.530
VID0 = 0V, VID1 = V
IN
1.764
1.8
1.836
V
HYST
PFM Comparator Hysteresis
Voltage
(Note 7)
PFM Mode (SYNC = 0V)
16
mV
I
SHDN
Shutdown Supply Current
EN = 0V
0.1
3
µA
I
Q1
DC Bias Current into VDD
(V
OUT
set to 1.5V)
No-Load, PFM mode
(SYNC/MODE = 0V)
150
185
µA
I
Q2
No-Load, PWM mode
(SYNC/MODE = V
IN)
555
725
R
DSON (P)
Pin-Pin Resistance for P
FET
LM2612ABP & LM2612BBP
370
500
m
R
DSON (N)
Pin-Pin Resistance for N
FET
LM2612ABP & LM2612BBP
330
500
m
R
DSON , TC
FET Resistance
Temperature Coefficient
0.5
%/C
I
lim
Switch Peak Current Limit
(Note 8)
LM2612ABP
510
690
850
mA
LM2612BBP
400
690
980
V
EN_H
EN Positive Going
Threshold Voltage
(Note 8)
V
DD = 3.6V
2.54
2.85
V
V
EN_L
EN Negative Going
Threshold Voltage
(Note 8)
V
DD = 3.6V
1.70
2.00
V
V
SYNC_H
SYNC/MODE Positive
Going Threshold Voltage
0.95
1.3
V
V
SYNC_L
SYNC/MODE Negative
Going Threshold Voltage
0.4
0.9
V
V
ID_H
V
ID0,VID1 Positive Going
Threshold Voltage
0.92
1.2
V
V
ID_L
V
ID0,VID1 Negative Going
Threshold Voltage
0.4
0.83
V
www.national.com
3




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