LTM8025
3
8025fc
For more information www.linear.com/LTM8025
elecTrical characTerisTics
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 LTM8025E is guaranteed to meet performance specifications
from 0°C to 125°C internal. Specifications over the full –40°C to
125°C internal operating temperature range are assured by design,
PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Input Voltage
l
3.6 V
Output DC Voltage 0 < I
OUT
≤ 3A; R
ADJ
Open
0 < I
OUT
≤ 3A; R
ADJ
= 16.9k; V
IN
= 32V
0.8
24
V
V
Output DC Current V
OUT
= 3.3V 0 3 A
Quiescent Current into V
IN
RUN/SS = 0V
Not Switching
BIAS = 0V, Not Switching
0.01
25
85
1
60
150
µA
µA
µA
Quiescent Current into BIAS RUN/SS = 0V
Not Switching
BIAS = 0V, Not Switching
0.01
65
0
0.5
120
5
µA
µA
µA
Line Regulation 5.5V < V
IN
< 36V, I
OUT
= 1A 0.3 %
Load Regulation 0A < I
OUT
< 3A 0.4 %
Output Voltage Ripple (RMS) 0A < I
OUT
< 3A 10 mV
Switching Frequency R
T
= 45.3k 775 kHz
Voltage (at ADJ Pin)
l
775
770
790 805
810
mV
mV
Current Out of ADJ Pin ADJ = 1V, V
OUT
= 0V 2 µA
Minimum BIAS Voltage for Proper Operation 2 2.8 V
RUN/SS Pin Current RUN/SS = 2.5V 5 10 µA
RUN Input High Voltage 2.5 V
RUN Input Low Voltage 0.2 V
PGOOD Threshold (at ADJ Pin) V
OUT
Rising 710 mV
PGOOD Leakage Current PGOOD = 30V 0.1 1 µA
PGOOD Sink Current PGOOD = 0.4V 200 700 µA
SYNC Input Low Threshold f
SYNC
= 550kHz 0.5 V
SYNC Input High Threshold f
SYNC
= 550kHz 0.7 V
SYNC Bias Current SYNC = 0V 0.1 µA
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 12V, RUN/SS = 12V, BIAS = 3V unless otherwise noted. (Note 2)
characterization and correlation with statistical process controls. The
LTM8025I is guaranteed to meet specifications over the full –40°C
to 125°C internal operating temperature range. The LTM8025MP is
guaranteed to meet specifications over the full –55°C to 125°C internal
operating temperature range. Note that the maximum internal temperature
is determined by specific operating conditions in conjunction with board
layout, the rated package thermal resistance and other environmental
factors.
