Datasheet

LM5115
SNVS343E –MARCH 2005–REVISED MARCH 2013 www.ti.com
Absolute Maximum Ratings
(1)(2)
VBIAS to GND –0.3V to 32V
VCC to GND –0.3V to 9V
HS to GND –1V to 76V
VOUT, CS to GND – 0.3V to 15V
All other inputs to GND −0.3V to 7.0V
Storage Temperature Range –55°C to +150°C
Junction Temperature +150°C
ESD Rating
HBM
(3)
2 kV
(1) Absolute Maximum Ratings indicate limits beyond which damage to the component may occur. Operating Ratings are conditions under
which operation of the device is ensured. Operating Ratings do not imply ensured performance limits. For ensured performance limits
and associated test conditions, see the Electrical Characteristics tables.
(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.
Operating Ratings
VBIAS supply voltage 5V to 30V
VCC supply voltage 5V to 7.5V
HS voltage 0V to 75V
HB voltage VCC + HS
Operating Junction Temperature –40°C to +125°C
Table 1. Typical Operating Conditions
PARAMETER MIN TYP MAX UNITS
Supply Voltage, VBIAS 4.5 30 V
Supply Voltage, VCC 4.5 7 V
Supply voltage bypass, CVBIAS 0.1 1 µF
Reference bypass capacitor, CVCC 0.1 1 10 µF
HB-HS bootstrap capacitor 0.047 µF
SYNC Current Range (VCC = 4.5V) 50 150 µA
RAMP Saw Tooth Amplitude 1 1.75 V
VOUT regulation voltage (VBIAS min = 3V + VOUT) 0.75 13.5 V
Electrical Characteristics
Unless otherwise specified, T
J
= –40°C to +125°C, VBIAS = 12V, No Load on LO or HO.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VBIAS SUPPLY
Ibias VBIAS Supply Current F
SYNC
= 200kHz 4 mA
VCC LOW DROPOUT BIAS REGULATOR
VccReg VCC Regulation VCC open circuit. Outputs not switching 6.65 7 7.15 V
VCC Current Limit see
(1)
40 mA
VCC Under-voltage Lockout Voltage Positive going VCC 4 4.5 V
VCC Under-voltage Hysteresis 0.2 0.25 0.3 V
SOFT-START
SS Source Impedance 43 60 77 kΩ
SS Discharge Impedance 100 Ω
ERROR AMPLIFIER and FEEDBACK REFERENCE
VREF FB Reference Voltage Measured at FB pin 0.737 0.75 0.763 V
(1) Device thermal limitations may limit usable range.
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