ltm8021 Linear Technology Corporation, ltm8021 Datasheet - Page 3

• Manufacturer Part Number: ltm8021
• Description: 36vin, 500ma Step-down Dc/dc ?module
• Manufacturer: Linear Technology Corporation

ELECTRICAL CHARACTERISTICS
erature range, otherwise specifi cations are at T
SYMBOL
V
V
f
I
I
ADJ
V
I
I
V
V
R
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTM8021E is guaranteed to meet performance specifi cations
from 0°C to 125°C internal. Specifi cations over the full –40°C to 125°C
internal operating temperature range are assured by design, characteriza-
SW
OSC
ISC
ADJ
RUN/SS
OUT(DC)
OUT(AC_RMS)
BIAS(MIN)
IH(RUN/SS)
IL(RUN/SS)
FB
PARAMETER
DC Output Voltage
Output Voltage Ripple (RMS)
Switching Frequency
Short-Circuit Output Current
Short-Circuit Input Current
Voltage at ADJ Pin
Minimum BIAS Voltage for Proper
Operation
Current Out of ADJ Pin
RUN/SS Pin Current
RUN/SS Input High Voltage
RUN/SS Input Low Voltage
Internal Feedback Resistor
A
= 25°C, V
CONDITIONS
V
R
V
C
I
V
V
R
I
V
V
R
R
RUN/SS = V
OUT
OUT
IN
IN
OUT
IN
IN
OUT
RUN/SS
ADJ
ADJ
ADJ
ADJ
= 24V, 0 ≤ I
= 24V, I
= 36V, V
= 36V, V
= 500mA
= 500mA
= 31.6k, 0.1%
= 2.2μF , V
Open
= 5V, V
Open, I
Open, I
IN
The
= 10V, V
= 2.5V, R
l
OUT
BIAS
BIAS
BIAS
ADJ
OUT
OUT
denotes the specifi cations which apply over the full operating temp-
BIAS
OUT
= 250mA
= 0V, RUN/SS = 0V
= 500mA
= 500mA
= V
= V
= V
RUN/SS
ADJ
tion and correlation with statistical process controls. The LTM8021I is
guaranteed to meet specifi cations over the full –40°C to 125°C internal
operating temperature range. Note that the maximum internal temperature
is determined by specifi c operating conditions in conjunction with board
layout, the rated package thermal resistance and other environmental
factors.
Note 3: Guaranteed by design.
≤ 500mA
= V
ADJ
OUT
OUT
Open
OUT
= 0V
= 0V
= 0V
= 10V, V
BIAS
= 3V, R
ADJ
l
= 31.6k.
MIN
0.79
0.9
1.6
0.80
TYP
900
100
3.3
1.1
2.2
25
50
23
1
LTM8021
MAX
0.83
1.3
0.5
3
UNITS
8021fa
3
MHz
mV
mA
mA
kΩ
μA
μA
V
V
V
V
V