Datasheet

LM5001 , LM5001-Q1
www.ti.com SNVS484G –JANUARY 2007–REVISED APRIL 2014
Electrical Characteristics (continued)
Minimum and Maximum limits are ensured through test, design, or statistical correlation, over the junction temperature (T
J
)
range of –40°C to +125°C. Typical values represent the most likely parametric norm at T
J
= 25°C, and are provided for
reference purposes only. V
VIN
= 10 V, R
RT
= 48.7 kΩ unless otherwise stated
(1)
.
SYMBOL PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
EN Thresholds
EN Shutdown Threshold V
EN
increasing 0.25 0.45 0.65
EN Shutdown Hysteresis 0.1
V
EN Standby Threshold V
EN
increasing 1.2 1.26 1.32
EN Standby Hysteresis 0.1
EN Current Source 6 µA
MOSFET Characteristics
MOSFET R
DS(ON)
plus LM5001 490 800
I
D
= 0.5 A mΩ
Current Sense Resistance
LM5001-Q1 490 880
MOSFET Leakage Current V
SW
= 75 V 0.05 5 µA
MOSFET Gate Charge V
VCC
= 6.9 V 4.5 nC
Current Limit
I
LIM
Cycle by Cycle Current Limit 0.8 1.0 1.2 A
Cycle by Cycle Current Limit Delay 100 200 ns
Oscillator
F
SW1
Frequency1 R
RT
= 48.7 kΩ 225 260 295
KHz
F
SW2
Frequency2 R
RT
= 15.8 kΩ 660 780 900
V
RT-SYNC
SYNC Threshold 2.2 2.6 3.2 V
SYNC Pulse Width Minimum V
RT
> V
RT-SYNC
+ 0.5 V 15 ns
PWM Comparator
Maximum Duty Cycle 80% 85% 90%
Min On-time V
COMP
> V
COMP-OS
35
ns
Min On-time V
COMP
< V
COMP-OS
0
V
COMP-OS
COMP to PWM Comparator Offset 0.9 1.30 1.55 V
Error Amplifier
V
FB-REF
Internal reference
Feedback Reference Voltage 1.241 1.260 1.279 V
V
FB
= V
COMP
FB Bias Current 10 nA
DC Gain 72 dB
COMP Sink Current V
COMP
= 250 mV 2.5
mA
COMP Short Circuit Current V
FB
= 0, V
COMP
= 0 0.9 1.2 1.5
COMP Open Circuit Voltage V
FB
= 0 4.8 5.5 6.2 V
COMP to SW Delay 50 ns
Unity Gain Bandwidth 3 MHz
Thermal Shutdown
T
SD
Thermal Shutdown Threshold 165
°C
Thermal Shutdown Hysteresis 20
Copyright © 2007–2014, Texas Instruments Incorporated Submit Documentation Feedback 5
Product Folder Links: LM5001 LM5001-Q1