Datasheet
LM3102
SNVS515G –SEPTEMBER 2007–REVISED JANUARY 2012
www.ti.com
ABSOLUTE MAXIMUM RATINGS
(1)(2)
VIN, RON to AGND -0.3V to 43.5V
SW to AGND -0.3V to 43.5V
SW to AGND (Transient) -2V (< 100ns)
VIN to SW -0.3V to 43.5V
BST to SW -0.3V to 7V
All Other Inputs to AGND -0.3V to 7V
ESD Rating
(3)
Human Body Model ±2kV
Storage Temperature Range -65°C to +150°C
Junction Temperature (T
J
) 150°C
(1) Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which
operation of the device is intended to be functional. For ensured specifications and test conditions, see the Electrical Characteristics.
(2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and
specifications.
(3) The human body model is a 100pF capacitor discharged through a 1.5kΩ resistor into each pin.
OPERATING RATINGS
(1)
Supply Voltage Range (VIN) 4.5V to 42V
Junction Temperature Range (T
J
) −40°C to +125°C
Thermal Resistance (θ
JC
) 20 lead TSSOP
(2)
6.5°C/W
Thermal Resistance (θ
JA
) 20 lead TSSOP
(3)
30°C/W
Thermal Resistance (θ
JA
) 28 ball DSBGA
(3)
50°C/W
(1) Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which
operation of the device is intended to be functional. For ensured specifications and test conditions, see the Electrical Characteristics.
(2) θ
JC
measurements are performed in general accordance with Mil-Std 883B, Method 1012.1 and utilizes the copper heat sink technique.
Copper Heat Sink @ 60°C.
(3) θ
JA
measurements were performed in general accordance with JEDEC standards JESD51–1 to JESD51–11.
ELECTRICAL CHARACTERISTICS
Specifications with standard type are for T
J
= 25°C only; limits in boldface type apply over the full Operating Junction
Temperature (T
J
) range. Minimum and Maximum limits are specified through test, design, or statistical correlation. Typical
values represent the most likely parametric norm at T
J
= 25°C, and are provided for reference purposes only. Unless
otherwise stated the following conditions apply: V
IN
= 18V, V
OUT
= 3.3V.
Symbol Parameter Conditions Min Typ Max Units
Start-Up Regulator, V
CC
V
CC
V
CC
output voltage C
CC
= 680nF, no load 5.0 6.0 7.2 V
V
IN
- V
CC
V
IN
- V
CC
dropout voltage I
CC
= 2mA 50 200 mV
I
CC
= 20mA 350 570
I
VCCL
V
CC
current limit
(1)
V
CC
= 0V 40 65 mA
V
CC-UVLO
V
CC
under-voltage lockout threshold V
IN
increasing 3.6 3.75 3.9 V
(UVLO)
V
CC-UVLO-HYS
V
CC
UVLO hysteresis V
IN
decreasing – TSSOP 130 mV
package
V
CC-UVLO-HYS
V
CC
UVLO hysteresis V
IN
decreasing – DSBGA 150 mV
package
t
VCC-UVLO-D
V
CC
UVLO filter delay 3 µs
I
IN
I
IN
operating current No switching, V
FB
= 1V 0.7 1 mA
I
IN-SD
I
IN
operating current, Device shutdown V
EN
= 0V 25 40 µA
Switching Characteristics
R
DS-UP-ON
Main MOSFET R
DS(on)
0.18 0.375 Ω
R
DS- DN-ON
Syn. MOSFET R
DS(on)
0.11 0.225 Ω
V
G-UVLO
Gate drive voltage UVLO V
BST
- V
SW
increasing 3.3 4 V
(1) V
CC
provides self bias for the internal gate drive and control circuits. Device thermal limitations limit external loading.
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