LM3485MM/NOPB National Semiconductor, LM3485MM/NOPB Datasheet - Page 3

• Manufacturer Part Number: LM3485MM/NOPB
• Description: IC CONTROLLER PFET 8-MSOP
• Manufacturer: National Semiconductor
• Type: Step-Down (Buck)r

Specifications of LM3485MM/NOPB

• Internal Switch(s): No
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.24 ~ 35 V
• Current - Output: 4A
• Voltage - Input: 4.5 ~ 35 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Power - Output: 417mW
• Dc To Dc Converter Type: Buck Controller
• Pin Count: 8
• Input Voltage: 4.5 to 35V
• Output Voltage: 1.242 to 35V
• Output Current: 4A
• Package Type: MSOP
• Mounting: Surface Mount
• Operating Temperature Classification: Automotive
• Operating Temperature (min): -40C
• Operating Temperature (max): 125C
• For Use With: LM3485LED EVAL - BOARD EVALUATION LM3485LEDLM3485EVAL - BOARD EVALUATION LM3485
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Frequency - Switching: -
• Lead Free Status / Rohs Status: Compliant
• Other names: LM3485MM; LM3485MMTR

I
V
V
V
V
I
T
R
I
I
T
T
%V
Q
CL_ADJ
PGATE
FB
CL
ONMIN_NOR
ONMIN_CL
FB
HYST
CL
CL_OFFSET
PGATE
VIN Voltage
PGATE Voltage
FB Voltage
ISENSE Voltage
ADJ Voltage
Maximum Junction Temp.
Power Dissipation
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Electrical Characteristics
Specifications in Standard type face are for T
Range (T
max specification limits are guaranteed by design, test, or statistical analysis.
(Note
FB
Symbol
/ΔV
IN
7)
J
= −40°C to +125°C). Unless otherwise specified, V
Quiescent Current at
ground pin
Feedback Voltage
(Note
Comparator Hysteresis
Current limit comparator trip
voltage
Current limit comparator
offset
Current limit ADJ current
source
Current limit one shot off
time
Driver resistance
Driver Output current
FB pin Bias Current
(Note
Minimum on time in normal
operation
Minimum on time in current
limit
Feedback Voltage Line
Regulation
6)
8)
Parameter
417mW @ T
FB = 1.5V
(Not Switching)
R
R
V
V
V
V
V
Source
I
Sink
I
Source
V
P
Sink
V
P
V
V
OUT = 1000pF
(Note
V
V
1000pF
(Note
4.5
SOURCE
Sink
J
FB
FB
ADJ
ISNS
FB
IN
GATE
IN
GATE
FB
ISNS
ISNS
FB
ADJ
ADJ
= 25°C, and in bold type face apply over the full Operating Temperature
−0.3V to 36V
−0.3V to 36V
−1.0V to 36V
−0.3V to 36V
(Note
= 7V,
= 7V,
≤
−0.3V to 5V
= 1.5V
= 1.5V
= 1.0V
= 1.0V
= 1.0V C
= 100mA
= 20kΩ
= 160kΩ
= 11.5V
= 11.0V
= V
= V
V
9)
9)
= 3.5V
= 3.5V
A
IN
Conditions
= 100mA
= 25°C
1)
ADJ
ADJ
150°C
≤
35V
+0.1V C
+0.1V
load
on OUT =
IN
3
= 12V, V
load
ESD Susceptibilty
Lead Temperature
Storage Temperature
Operating Ratings
Supply Voltage
Operating Junction
Temperature
on
Human Body Model
Vapor Phase (60 sec.)
Infared (15 sec.)
ISNS
(Note
= V
1.226
1.217
Min
−20
3.0
6
IN
4)
− 1V, and V
(Note
1.242
0.010
0.44
0.32
(Note
Typ
250
110
880
300
100
175
5.5
5.5
8.5
10
14
0
9
ADJ
5)
= V
3)
(Note
IN
− 1.1V. Datasheet min/
(Note
1.258
1.267
1)
Max
+20
400
750
7.0
15
20
14
−40°C to +125°C
4)
−65°C to 150°C
4.5V to 35V
www.national.com
Unit
%/V
mV
mV
mV
215°C
220°C
µA
µA
nA
µs
ns
ns
V
Ω
A
2kV