LM3444MMX/NOPB National Semiconductor, LM3444MMX/NOPB Datasheet - Page 3

• Manufacturer Part Number: LM3444MMX/NOPB
• Description: IC LED DRIVER AC-DC 10MSOP
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LM3444MMX/NOPB

• Constant Current: Yes
• Constant Voltage: Yes
• Internal Driver: No
• Type - Primary: General Purpose
• Type - Secondary: High Brightness LED (HBLED)
• Mounting Type: Surface Mount
• Topology: AC DC Offline Switcher, PWM, Step-Down (Buck)
• Number Of Outputs: 1
• Frequency: Adjustable/Selectable
• Voltage - Supply: 8 V ~ 13 V
• Package / Case: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Operating Temperature: -

V
COFF
CURRENT LIMIT
CURRENT SENSE COMPARATOR
GATE DRIVE OUTPUT
THERMAL SHUTDOWN
THERMAL SPECIFICATION
CC
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Electrical Characteristics
over the full Operating Temperature Range ( T
design, or statistical correlation. Typical values represent the most likely parametric norm at T
reference purposes only. Unless otherwise stated the following conditions apply: V
Note 1: Absolute maximum ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions for which the device is intended
to be functional, but device parameter specifications may not be guaranteed. For guaranteed specifications and test conditions, see the Electrical Characteristics.
All voltages are with respect to the potential at the GND pin, unless otherwise specified.
Note 2: Internal thermal shutdown circuitry protects the device from permanent damage. Thermal shutdown engages at T
= 145°C (typ).
Note 3: Human Body Model, applicable std. JESD22-A114-C.
V
ISNS to GND
FILTER and COFF to GND
COFF Input Current
Continuous Power Dissipation
(Note
SUPPLY
CC
V
Symbol
V
R
V
R
V
CC-UVLO
V
V
t
and GATE to GND
t
R
R
I
FILTER
I
COFF
FILTER
V
T
ISNS
DRVH
VCC
COFF
COFF
DRVL
DRV
t
ISNS
DV
2)
θJC
SD
θJA
OS
Parameter
Operating supply current
Rising threshold
Falling threshold
Hysterisis
Time out threshold
Off timer sinking impedance
Restart timer
ISNS limit threshold
Leading edge blanking time
Current limit reset delay
ISNS limit to GATE delay
FILTER open circuit voltage
FILTER impedance
Current sense comparator offset voltage
GATE high saturation
GATE low saturation
Peak souce current
Peak sink current
Rise time
Fall time
Thermal shutdown temperature
Thermal shutdown hysteresis
MSOP-10 junction to ambient
MSOP-10 junction to case
Internally Limited
-0.3V to +2.5V
-0.3V to +7.0V
Limits in standard type face are for T
-0.3V to +14V
(Note
J
= −40°C to +125°C). Minimum and Maximum limits are guaranteed through test,
60mA
1)
3
Operating Conditions
ESD Susceptibility
HBM
Junction Temperature (T
Storage Temperature Range
Range (Soldering)
V
Junction Temperature
CC
Maximum Lead Temp.
Conditions
ISNS = 0 to 1.75V step
I
I
GATE = V
GATE = V
C
C
(Note
GATE
GATE
load
load
(Note
= 1 nF
= 1 nF
= 50 mA
= 100 mA
4)
3)
J
CC
CC
CC
= 25°C and those with boldface type apply
/2
/2
= 12V.
J
J-MAX
= +25ºC, and are provided for
J
)
= 165°C (typ.) and disengages at T
1.225 1.276 1.327
1.174 1.269 1.364
Min
720
-4.0
6.0
-0.77
1.58
1.12
0.24
0.22
0.88
Typ
180
125
180
750
165
124
7.4
6.4
0.1
33
33
15
15
20
76
−40°C to +125°C
1
-65°C to +150°C
8.0V to 13V
www.national.com
Max
2.25
0.50
0.50
780
7.7
4.0
60
150°C
260°C
2 kV
Units
°C/W
MΩ
mA
mV
mV
µs
ns
µs
ns
ns
°C
Ω
V
V
V
V
A
J