LM3421MH/NOPB National Semiconductor, LM3421MH/NOPB Datasheet - Page 4

• Manufacturer Part Number: LM3421MH/NOPB
• Description: IC LED DRVR HP CONS CURR 16TSSOP
• Manufacturer: National Semiconductor
• Series: PowerWise®r
• Type: High Power, Constant Currentr

Specifications of LM3421MH/NOPB

• Constant Current: Yes
• Topology: PWM, SEPIC, Step-Down (Buck), Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: No
• Type - Primary: Automotive
• Type - Secondary: High Brightness LED (HBLED)
• Frequency: 2MHz
• Voltage - Supply: 4.5 V ~ 75 V
• Voltage - Output: 3 V ~ 72 V
• Mounting Type: Surface Mount
• Package / Case: 16-TSSOP Exposed Pad, 16-eTSSOP, 16-HTSSOP
• Operating Temperature: -40°C ~ 125°C
• Current - Output / Channel: 1A
• Internal Switch(s): No
• Efficiency: 95%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: *LM3421MH/NOPB; LM3421MH

www.national.com
STARTUP REGULATOR
V
I
I
I
V
V
V
EN THRESHOLDS
EN
EN
R
CSH THRESHOLDS
CCLIM
Q
SD
CCREG
CC
CCUV
CCHYS
EN
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
the two operating ranges will be identified in the Temp Range column as Q0 for T
to +125°C. If no temperature range is indicated then the specification holds for both Q1 and Q0. Minimum and Maximum limits are
guaranteed through test, design, or statistical correlation. Typical values represent the most likely parametric norm at T
and are provided for reference purposes only. Unless otherwise stated the following condition applies: V
Symbol
V
OVP, HSP, HSN, LRDY,
FLT, DPOL
RCT
IS
V
TIMR
COMP, CSH
GATE, DDRV
PGND
ST
STHYS
SUPPLY
IN
CC
, EN, RPD, nDIM
J
= −40°C to +150°C for LM3421Q0/LM3423Q0, T
V
V
Quiescent Current
Shutdown Current
V
V
EN Startup Threshold
EN Startup Hysteresis
EN Pulldown Resistance
CSH High Fault
CSH Low Condition on LRDY
Pin (LM3423)
CC
CC
CC
CC
Regulation
Current Limit
UVLO Threshold
UVLO Hysteresis
Parameter
-100µA to +100µA Continuous
-1 mA to +5 mA continuous
-1 mA to +1 mA continuous
-2.5V to 2.5V for 100 ns
V
-200 µA to +200 µA
-100 µA continuous
CC
-1 mA continuous
-1mA continuous
+2.5V for 100 ns
-2.5V for 100 ns
I
V
EN = 3.0V, Static
EN = 0V
V
V
EN Increasing
EN Decreasing
EN = 1V
CSH Increasing
CSH increasing
CC
(Note
-0.3V to 76.0V
-0.3V to 76.0V
-0.3V to 76.0V
-0.3V to 76.0V
J
CC
CC
CC
-2V for 100 ns
-0.3V to 8.0V
-0.3V to 7.0V
-0.3V to 6.0V
-0.3V to 0.3V
= 25°C and those with boldface type apply over the full Operating Temperature
-0.3V to V
= 0 mA
Conditions
(Note
Continuous
= 0V
Increasing
Decreasing
1)
1)
CC
J
= −40°C to +125°C for all others). Specifications that differ between
4
Range
Temp
Q1
Q0
Q1
Q0
Q1
Q0
Operating Conditions
Maximum Junction
Temperature
Storage Temperature
Range
Maximum Lead
Temperature (Solder and
Reflow)
Continuous Power
Dissipation
ESD Susceptibility
(Note
Operating Junction
Temperature Range
Input Voltage V
Human Body Model
Charge Device Model
LM3421, LM3421Q1,
LM3423, LM3423Q1
LM3421Q0, LM3423Q0
4)
(Note
(Note
6.30
3.70
0.80
0.45
Min
20
J
= −40°C to +150°C and as Q1 for T
3)
5)
IN
(Note
6.90
4.17
4.08
1.75
1.63
0.82
Typ
0.1
0.1
0.1
1.6
1.0
25
2
6)
IN
= +14V.
(Note
(Note
750V all other pins
Max
7.35
4.50
2.40
2.75
1.30
1.80
3.5
1.0
Internally Limited
−65°C to +150°C
Internally Limited
−40°C to +125°C
−40°C to +150°C
3
1)
500V CSH pin
5)
4.5V to 75V
J
J
= +25°C,
= −40°C
260°C
Units
2 kV
MΩ
mA
µA
V
V
V
V