lm5088mhx-2 National Semiconductor Corporation, lm5088mhx-2 Datasheet - Page 4

• Manufacturer Part Number: lm5088mhx-2
• Description: Wide Input Range Non-synchronous Buck Controller
• Manufacturer: National Semiconductor Corporation

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VIN SUPPLY
VCC REGULATOR
ENABLE THRESHOLDS
SOFT- START
ERROR AMPLIFIER
PWM COMPARATORS
I
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
VIN, VOUT to GND
BOOT to GND
SW to GND
VCC to GND
HG to SW
EN to GND
BOOT to SW
Electrical Characteristics
junction temperature (T
correlation. Typical values represent at T
following conditions apply: V
SHUTDOWN
V
V
I
V
Symbol
T
T
STANDBY
VCC(Reg)
VCC(Reg)
HG(OFF)
VCC(UV)
ON(MIN)
V
FBW
AOL
I
BIAS
REF
Parameter
VIN Operating Current
VIN Standby Current
VIN Shutdown Current
VCC Regulation
VCC Regulation
VCC Sourcing Current Limit
VCC Under-Voltage Lockout Threshold Positive going VVCC
VCC Under-Voltage Hysteresis
EN Shutdown Threshold
EN Shutdown Hysteresis
EN Standby Threshold
EN Standby Hysteresis
EN Pull-up Current Source
SS Pull-up Current Source
FB to SS Offset
FB Reference Voltage
FB Input Bias Current
COMP Sink/Source Current
DC Gain
Unity gain bandwidth
Forced HG Off-time
Minimum HG On-time
COMP to PWM comparator offset
J
) range of -40°C to +125°C. Minimum and Maximum limits are guaranteed through test, design, or statistical
VIN
= 48V, V
VCC
J
= 25°C, and are provided for reference purposes only. Unless otherwise stated the
= 8V, V
Limits in standard type are for T
-0.3V to BOOT
(Note 1)
-0.3V to 16V
-0.3V to 16V
-2V to 76V
EN
Conditions
V
V
V
V
V
V
V
V
V
V
V
V
V
Measured at FB Pin
FB = COMP
V
V
+0.3V
= 5V R
FB
EN
EN
VCC
VIN
VCC
EN
EN
EN
EN
EN
SS
FB
FB
VIN
76V
90V
14V
= 1.3V
= 1.3V
= 1.2V
= 1V
= 0V
Rising
Falling
Rising
Falling
= 0V
= 0V
= 4.5V,VVCC=open
= 60V
= open
= 0
RT
4
= 31.6 kΩ, No load on HG. See Note 4.
VIN Voltage
VCC Voltage (externally supplied)
Operation Junction Temperature
CS, CSG to GND
All other inputs to GND
ESD Rating
Storage Temperature Range
Junction Temperature
Operating Ratings
Human Body Model
J
= 25°C only; limits in boldface type apply over the
1.187
Min
320
185
7.4
4.3
3.7
1.1
30
8
3
(Note 1)
1.205
Typ
200
400
100
120
150
280
930
3.8
2.9
7.8
1.2
15
35
11
18
60
55
4
5
3
−40°C to + 125°C
−65°C to + 150°C
-0.3V to 0.3V
1.223
Max
480
100
365
5.5
3.6
8.2
4.5
4.2
1.3
4.5V to 75V
8.3V to 13V
26
13
-0.3V to 7V
+ 150°C
2 kV
Units
MHz
mA
mA
mA
mV
mV
mV
mV
mV
mA
mV
µA
µA
µA
nA
dB
ns
ns
V
V
V
V
V