LM2635 National Semiconductor, LM2635 Datasheet - Page 4

• Manufacturer Part Number: LM2635
• Description: 5-Bit Programmable Synchronous Buck Regulator Controller
• Manufacturer: National Semiconductor

www.national.com
V
V
G
SR
BW
I
I
D
D
R
R
R
f
I
V
V
V
Q_V CC
Q_BOOTV
OSC
MAX
V
T
Electrical Characteristics
V
BOOTV
DACOUT
OUTEN_IH
OUTEN_IL
REF
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
V
BOOTV
Junction Temperature
DC Power Dissipation (Note 2)
Storage Temperature
EA
MAX
MIN
SENSE
DS_SRC
DS_SINK
Symbol
(All voltages are referenced to the PGND and SGND pins.)
J
CC
OUT
EA
CC
EA
= +25˚C. Limits appearing in boldface type apply over 0˚C to +70˚C.
= 5V unless otherwise indicated under the Conditions column. Typicals and limits appearing in plain type apply for T
FET Driver Supply
Voltage
5-Bit DAC Output
Voltage
DC Load Regulation
DC Line Regulation
Error Amplifier DC Gain
Error Amplifier Slew
Rate
Error Amplifier Unity
Gain Bandwidth
Operating V
Shutdown V
BOOTV Pin Quiescent
Current
Maximum Duty Cycle
Minimum Duty Cycle
SENSE Pin Resistance
to Ground
FET Driver
Drain-Source ON
Resistance when
Sourcing Current
FET Driver
Drain-Source ON
Resistance when
Sinking Current
Oscillator Frequency
IMAX Pin Sink Current
OUTEN Pin Input Logic
Low to Logic High Trip
Point
OUTEN Pin Input Logic
High to Logic Low Trip
Point
Band Gap Reference
Parameter
CC
CC
Current
Current
VID4:0=00101
VID4:0=00001
VID4:0=11101
VID4:0=10111
I
V
OUTEN=V
OUTEN Floating, VID0:4 Floating
BOOTV=12V, OUTEN=0, VID0:4
Floating
BOOTV=5V
(Independent of BOOTV Voltage)
R
R
R
V
OUTEN Voltage
OUTEN Voltage
I
OUT
VREF
IN
IMAX
FA
FA
FA
−65˚C to +150˚C
=4.75V to 5.25V Figure 2
=0 to 14A Figure 2
= 84 k
= 22 k
= 10.5 k
(Note 1)
= 0 mA
= 5V, V
CC
1.42W
Conditions
=5V, VID=10111
150˚C
IFB
15V
7V
= 6V, V
4
CC
Soldering Time, Temperature
ESD Susceptibility (Note 3)
Recommended Operating
Conditions
Supply Voltage Range (V
Junction Temperature Range
Wave (4 seconds)
Infrared (10 seconds)
Vapor Phase (75 seconds)
= 5V
1.773
1.969
2.165
2.753
1.231
Min
250
130
1.5
3.5
(Note 1)
1
7
CC
)
1.809
2.009
2.209
2.809
1.256
1000
2000
11.5
Typ
300
180
2.5
1.5
1.7
3.0
1.8
−5
85
90
1
6
5
4
0
7
1.845
2.049
2.253
2.865
1.281
Max
350
230
1.5
15
16
4
3
0˚C to +125˚C
4.5V to 5.5V
260˚C
240˚C
219˚C
Units
A
MHz
V/µs
kHz
mV
mA
2 kV
dB
µA
k
µA
%
%
V
V
V
V
V
=