Datasheet

LM5118, LM5118-Q1
www.ti.com SNVS566H –APRIL 2008–REVISED JANUARY 2014
Electrical Characteristics
Limits in standard type are for T
J
= 25°C only; limits in boldface type apply over the junction temperature range of –40°C to
+125°C. Unless otherwise specified, the following conditions apply: VIN = 48 V, VCCX = 0 V, EN = 5 V, RT = 29.11 kΩ, No
load on LO and HO
(1)
.
Symbol Parameter Conditions Min Typ Max Units
VIN SUPPLY
I
BIAS
VIN Operating Current VCCX = 0 V 4.5 5.5 mA
I
BIASX
VIN Operating Current VCCX = 5 V 1 1.85 mA
I
STDBY
VIN Shutdown Current EN = 0 V 1 10 µA
VCC REGULATOR
V
CC(REG)
VCC Regulation VCCX = 0 V 6.8 7 7.2 V
V
CC(REG)
VCC Regulation VCCX = 0 V, VIN = 6 V 5 5.25 5.5 V
VCC Sourcing Current Limit VCC = 0 21 35 mA
VCCX Switch threshold VCCX Rising 3.68 3.85 4.02 V
VCCX Switch hysteresis 0.2 V
VCCX Switch RDS(ON) ICCX = 10 mA 5 12 Ω
VCCX Switch Leakage VCCX = 0 V 0.5 1 µA
VCCCX Pull-down Resistance VCCX = 3 V 70 kΩ
VCC Under-Voltage Lockout Voltage VCC Rising 3.52 3.7 3.86 V
VCC Under-Voltage Hysteresis 0.21 V
HB DC Bias current HB-HS = 15 V 205 260 µA
VC LDO Mode Turn-off 10 V
EN INPUT
V
IL max
EN Input Low Threshold 0.5 V
V
IH min
EN Input High Threshold 3.00 V
EN Input Bias Current VEN = 3 V -1 1 µA
EN Input Bias Current VEN = 0.5 V -1 1 µA
EN Input Bias Current VEN = 75 V 50 µA
UVLO THRESHOLDS
UVLO Standby Threshold UVLO Rising 1.191 1.231 1.271 V
UVLO Threshold Hysteresis 0.105 V
UVLO Pull-up Current Source UVLO = 0 V 5 µA
UVLO Pull-down R
DS(ON)
100 200 Ω
SOFT- START
SS Current Source SS = 0V 7.5 10.5 13.5 µA
SS to FB Offset FB = 1.23 V 150 mV
SS Output Low Voltage Sinking 100 µA, UVLO = 0 V 7 mV
ERROR AMPLIFIER
V
REF
FB Reference Voltage Measured at FB pin, 1.212 1.230 1.248 V
FB = COMP
FB Input Bias Current FB = 2 V 20 200 nA
COMP Sink/Source Current 3 mA
A
OL
DC Gain 80 dB
f
BW
Unity Bain Bandwidth 3 MHz
PWM COMPARATORS
t
HO(OFF)
Forced HO Off-time 305 400 495 ns
T
ON(MIN)
Minimum HO On-time 70 ns
COMP to Comparator Offset 200 mV
(1) Min and Max limits are 100% production tested at 25°C. Limits over the operating temperature range are ensured through correlation
using Statistical Quality Control (SQC) methods. Limits are used to calculate Average Outgoing Quality Level (AOQL).
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