Datasheet

LTM8023
3
8023fj
For more information www.linear.com/LTM8023
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 10V, V
RUN/SS
= 10V, V
BIAS
= 3V, R
T
= 60.4k, C
OUT
= 4.7µF unless
otherwise specified.
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 LTM8023E is guaranteed to meet performance specifications
from 0°C to 85°C ambient. Specifications over the full –40°C to
85°C ambient operating temperature range are assured by design,
characterization and correlation with statistical process controls. The
LTM8023I is guaranteed to meet specifications over the full –40°C to 85°C
ambient operating temperature range. The LTM8023MP is guaranteed to
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Input DC Voltage
l
3.6 36 V
V
OUT
Output DC Voltage 0A < I
OUT
≤ 2A, R
ADJ
Open, C
OUT
= 51µF (Note 3)
0A < I
OUT
≤ 2A, R
ADJ
= 43.2k, C
OUT
= 51µF (Note 3)
0.8
10
V
V
R
ADJ(MIN)
Minimum Allowable R
ADJ
(Note 4) 42.2 kΩ
I
OUT
Continuous Output DC Current 4 ≤ V
IN
≤ 36, C
OUT
= 51µF 0 2 A
IQ
VIN
V
IN
Quiescent Current V
RUN/SS
= 0.2V, R
T
= 174k
V
BIAS
= 3V, Not Switching, R
T
= 174k (E, I)
V
BIAS
= 3V, Not Switching, R
T
= 174k (MP)
V
BIAS
= 0V, Not Switching, R
T
= 174k
l
l
0.1
25
25
85
0.5
60
350
120
µA
µA
µA
µA
IQ
BIAS
BIAS Quiescent Current V
RUN/SS
= 0.2V, R
T
= 174k
V
BIAS
= 3V, Not Switching, R
T
= 174k (E, I)
V
BIAS
= 3V, Not Switching, R
T
= 174k (MP)
V
BIAS
= 0V, Not Switching, R
T
= 174k
l
l
0.03
50
50
1
0.5
120
200
5
µA
µA
µA
µA
ΔV
OUT
/V
OUT
Line Regulation 5 ≤ V
IN
≤ 36, I
OUT
= 1A, V
OUT
= 3.3V, C
OUT
= 51µF 0.1 %
ΔV
OUT
/V
OUT
Load Regulation V
IN
= 24V, 0 ≤ I
OUT
≤ 2A, V
OUT
= 3.3V, C
OUT
= 51µF 0.4 %
V
OUT(AC_RMS)
Output Ripple (RMS) V
IN
= 24V, I
OUT
= 2A, V
OUT
= 3.3V, C
OUT
= 51µF 10 mV
f
SW
Switching Frequency R
T
= 113k, C
OUT
= 51µF 325 kHz
I
SC(OUT)
Output Short Circuit Current V
IN
= 36V, V
OUT
= 0V (Note 5) 2.9 A
V
ADJ
Voltage at ADJ Pin C
OUT
= 51µF
l
765 790 805 mV
V
BIAS(MIN)
Minimum BIAS Voltage for Proper
Operation
2.3 2.8 V
I
ADJ
Current Out of ADJ Pin ADJ = 1V, C
OUT
= 51µF 2 µA
I
RUN/SS
RUN/SS Pin Current V
RUN/SS
= 2.5V 5 10 µA
V
IH(RUN/SS)
RUN/SS Input High Voltage C
OUT
= 51µF 2.5 V
V
IL(RUN/SS)
RUN/SS Input Low Voltage C
OUT
= 51µF 0.2 V
V
PGOOD(TH)
PGOOD Threshold V
OUT
Rising 730 mV
I
PGOOD(O)
PGOOD Leakage V
PGOOD
= 30V 0.1 1 µA
I
PGOOD(SINK)
PGOOD Sink Current V
PGOOD
= 0.4V 200 800 µA
V
SYNCIL
SYNC Input Low Threshold f
SYNC
= 550kHz, C
OUT
= 51µF 0.5 V
V
SYNCIH
SYNC Input High Threshold f
SYNC
= 550kHz, C
OUT
= 51µF 0.7 V
I
SYNCBIAS
SYNC Pin Bias Current V
SYNC
= 0V 0.1 µA
meet specifications over the full –55°C to 125°C 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.
Note 3: C
OUT
= 51µF is composed of a 4.7µF ceramic capacitor in parallel
with a 47µF electrolytic.
Note 4: Guaranteed by design.
Note 5
: Short circuit current at V
IN
= 36V is guaranteed by characterization
and correlation. 100% tested at V
IN
= 10V
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