Datasheet

LM5033
SNVS181B –APRIL 2004–REVISED APRIL 2013 www.ti.com
Absolute Maximum Ratings
(1)(2)
V
IN
to GND -0.3V to 100V
V
CC
to GND -0.3V to 16V
Rt/Sync to GND -0.3V to 5.5V
Pins 3, 8, 10 to GND -0.3V to 7.0V
ESD Rating
(3)
Human Body Model 2kV
Storage Temperature Range -65°C to 150°C
Junction Temperature 150°C
Power Dissipation
(4)
Internally Limited
(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 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 100 pF capacitor discharged through a 1.5kΩ resistor into each pin.
(4) The maximum allowable power dissipation is a function of the maximum allowed junction temperature (T
J(max)
), the ambient temperature
(T
A
), and the junction-to-ambient thermal resistance (θ
JA
). The maximum allowable power dissipation can be calculated from PD =
(T
J(max)
- T
A
) / θ
JA
. Excessive power dissipation will cause the thermal shutdown to activate.
Operating Ratings
(5)
V
IN
Voltage (Pin1) 15 to 90V
Operating Junction Temperature -40°C to 125°C
(5) 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 specifications and test conditions, see the Electrical Characteristics.
Electrical Characteristics
Specifications with standard typeface are for T
J
= 25°C, and those with boldface type apply over full Operating Junction
Temperature range. V
IN
= 48V, V
CC
= 10V applied externally, R
T
= 26.7kΩ, unless otherwise stated. See
(1)
and
(2)
.
Symbol Parameter Conditions Min Typ Max Units
V
CC
Startup Regulator (Pins 1, 4)
V
CC
Reg V
CC
Voltage Pin 4 open 9.2 9.6 10.0 V
Icc-out V
CC
Current Limit Out1, Out2 disabled. Ext. 20 34 mA
supply to Vcc disconnected.
Iin Startup Regulator Current Normal Operation 150 500 µA
into V
IN
V
IN
= 90V
Ext. V
CC
Supply 7 mA
Disconnected and Output
Load = 1800pF
SS Pin = 0V 3 mA
UVT V
CC
Undervoltage VccReg - VccReg - 100 mV V
Threshold (increasing 300mV
V
CC
)
UVT Hysteresis 2.3 2.8 3.3
(decreasing V
CC
)
Icc-in Supply Current from SS Pin = 0V 2 3 mA
external source to V
CC
SS Pin = open and Output 7
Load = 1800pF
2.5V Reference (Pin 2)
Vref Output voltage Pin 2 sink current = 5mA 2.44 2.50 2.56 V
Current sink capability 5.0 13 mA
Current Sense (Pin 8)
CS Threshold voltage 0.45 0.50 0.55 V
(1) Min and Max limits are 100% production tested at 25°C. Limits over the operating temperature range are specified through correlation
using Statistical Quality Control (SQC) methods. Limits are used to calculate TI’s Average Outgoing Quality Level (AOQL).
(2) Typical specifications represent the most likely parametric norm at 25°C operation.
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