lm21215mhx National Semiconductor Corporation, lm21215mhx Datasheet - Page 3

• Manufacturer Part Number: lm21215mhx
• Description: 15a High Efficiency Synchronous Buck Regulator
• Manufacturer: National Semiconductor Corporation

Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Electrical Characteristics
standard type are for T
Minimum and maximum limits are guaranteed through test, design, or statistical correlation. Typical values represent the most
likely parametric norm at T
PVIN(Note
SW(Note
PGOOD, SS/TRK to GND
Storage Temperature
Lead Temperature
(Soldering, 10 sec.)
SYSTEM
OSCILLATOR
ERROR AMPLIFIER
ΔV
ΔV
V
R
V
R
Symbol
t
t
t
t
ΔV
RESETSS
HSBLANK
OUT
LSBLANK
ZXBLANK
UVLOHYS
TRACKOS
V
t
OUT
DSON HS
DSON LS
t
MINON
INTSS
f
I
I
V
V
V
I
UVLO
I
OSC
CLR
CLF
I
SD
SS
RAMP
FB
ZX
Q
OL
/ΔI
/ΔV
OUT
3), EN, FB, COMP,
IN
2), AVIN to GND
Parameter
Feedback pin voltage
Load Regulation
Line Regulation
High Side Switch On Resistance
Low Side Switch On Resistance
HS Rising Switch Current Limit
LS Falling Switch Current Limit
Zero Cross Voltage
Operating Quiescent Current
Shutdown Quiescent Current
AVIN Under Voltage Lockout
AVIN Under Voltage Lockout Hysteresis
SS/TRACK PIN accuracy (V
Soft-Start Pin Source Current
Internal Soft-Start Ramp to Vref
Device reset to soft-start ramp
Switching Frequency
HS OCP blanking time
LS OCP blanking time
Zero Cross blanking time
Minimum HS on-time
PWM Ramp p-p Voltage
Error Amplifier Open Loop Voltage Gain
J
= 25°C only, limits in bold face type apply over the junction temperature (T
J
= 25°C, and are provided for reference purposes only.
−0.3V to PVIN + 0.3V
SS
−65°C to 150°C
Unless otherwise stated, the following conditions apply: V
- V
−0.3V to +6V
(Note
FB
)
260°C
1)
3
Conditions
V
I
I
R
R
R
R
R
R
V
AVIN Rising
0 < V
C
Rising edge of SW to I
comparison
Falling edge of SW to I
comparison
Falling edge of SW to V
comparison
ICOMP = -65µA to 1mA
SW
SW
IN
EN
ILIM
ILIM
ILIM
ILIM
ILIM
ILIM
SS
PVIN, AVIN to GND
Junction Temperature
θ
Operating Ratings
= 2.95V to 5.5V
= 12A
= 12A
ESD Rating
Human Body Model
= 0V
= 0
JA
= 16.5 kΩ
= 41.3 kΩ
= 130 kΩ
= 16.5 kΩ
= 41.3 kΩ
= 130 kΩ
TRACK
(Note
< 0.55V
5)
CLR
CLF
ZX
(Note
4)
16.5
2.45
-1%
Min
140
350
475
8.5
-10
1.3
50
J
-8
) range of −40°C to +125°C.
(Note
PVIN, AVIN
0.02
14.5
Typ
200
500
110
500
400
120
140
0.6
0.1
4.3
3.8
7.5
1.5
2.7
1.9
0.8
20
10
50
55
95
1)
7
3
3
6
−40°C to +125°C
= 5V. Limits in
+2.95V to +5.5V
Max
23.5
11.5
2.95
280
675
200
525
1%
9.0
6.0
2.5
12
70
20
3
www.national.com
%V
%V
dBV/V
24°C/W
Units
kHz
mΩ
mΩ
mV
mA
mV
mV
µA
µA
±2kV
µs
µs
ns
ns
ns
ns
V
A
V
A
A
V
V
OUT
OUT
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