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LM5045MHX/NOPB.A Datasheet(PDF) 8 Page - Texas Instruments

Part # LM5045MHX/NOPB.A
Description  LM5045 Full-Bridge PWM Controller With Integrated MOSFET Drivers
PDF  47 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

LM5045MHX/NOPB.A Datasheet(HTML) 8 Page - Texas Instruments

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LM5045
SNVS699H – FEBRUARY 2011 – REVISED JANUARY 2015
www.ti.com
Electrical Characteristics (continued)
Limits in standard typeface are for TJ = 25°C only; MIN and MAX limits apply the junction temperature range of –40°C to
125°C. Unless otherwise specified, the following conditions apply: VIN = 48 V, RT = 25 kΩ, RD1 = RD2 = 20 kΩ. No load on
HO1, HO2, LO1, LO2, SR1, SR2, COMP = 0 V, UVLO = 2.5 V, OVP = 0 V, SSOFF = 0 V.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIH(min)
SSOFF Input-threshold
2.8
V
SSOFF pulldown resistance
200
k
Ω
CURRENT LIMIT RESTART (RES Pin)
RRES
RES pulldown resistance
Termination of hiccup timer
37
Ω
VRES
RES hiccup threshold
1
V
RES upper counter threshold
4
V
RES lower counter threshold
2
V
IRES-SRC1
Charge current source 1
VRES < 1 V, VCS> 750 mV
30
µA
IRES-SRC2
Charge current source 2
1 V < VRES < 4 V
10
µA
IRES-DIS2
Discharge current source 1
VCS < 750 mV
5
µA
IRES-DIS2
Discharge current source 2
2 V < VRES < 4 V
5
µA
Ratio of time in hiccup mode to time
VRES > 1 V, Hiccup counter
147
in current limit
VOLTAGE FEED-FORWARD (RAMP PIN)
RAMP sink impedance (Clocked)
5.5
20
Ω
OSCILLATOR (RT PIN)
FSW1
Frequency (LO1, half oscillator
RT = 25 kΩ
185
200
215
kHz
frequency)
FSW2
Frequency (LO1, half oscillator
RT = 10 kΩ
420
480
540
kHz
frequency)
DC level
2
V
RT sync threshold
2.8
3
3.3
V
8
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Product Folder Links: LM5045



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