ltm8027 Linear Technology Corporation, ltm8027 Datasheet - Page 3

• Manufacturer Part Number: ltm8027
• Description: 60v, 4a Dc/dc ?module Regulator
• Manufacturer: Linear Technology Corporation

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
SYMBOL
V
IQ
V
I
V
I
V
R
V
V
f
R
V
I
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 RUN pin is internally clamped to 5V
Note 3: The LTM8027E is guaranteed to meet performance specifi cations
from 0°C to 125°C internal operating temperature. Specifi cations over
the full –40°C to 125°C internal operating temperature range are assured
by design, characterization and correlation with statistical process
controls. The LTM8027I is guaranteed to meet specifi cations over the full
BIAS1
BIAS2
SW
SS
ADJ
BIAS1
BIAS2
BIAS(MINOV)
RUN(RISING)
RUN(FALLING)
SYNC(TH)
FB
SYNC
VIN
PARAMETER
ADJ Voltage
Quiescent Current into IN
BIAS1 Undervoltage Lockout (Rising)
BIAS1 Undervoltage Lockout (Falling)
Current into BIAS1
Minimum BIAS2 Voltage
Current Into BIAS2
Minimum Voltage to Overdrive INTV
Regulator
Internal Feedback Resistor
RUN Enable Voltage (Rising)
RUN Enable Voltage (Falling)
Switching Frequency
SYNC Input Resistance
SYNC Voltage Threshold
Soft-Start Charging Current
CC
A
= 25°C. V
CONDITIONS
V
V
No Load
RUN = 0V
R
R
f
SYNC
BIAS
RUN
T
T
= 187kΩ
= 23.7kΩ
The
= 0V
= V
= 350kHz
AUX
l
IN
denotes the specifi cations which apply over the full operating
= 20V, BIAS1 = BIAS2 = 10V, RUN = 2V, unless otherwise noted.
, V
OUT
–40°C to 125°C internal operating temperature range. The LTM8027MP
is guaranteed to meet specifi cations over the full –55°C to 125°C
internal operating 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 4: The maximum continuous output current may be derated by the
LTM8027 junction temperature.
Note 5: V
supported when the V
= 12VDC, No Load
IN
voltages below the start-up threshold (7.5V) are only
CC
is externally driven above 6.5V.
l
l
1.224
1.215
MIN
2.3
TYP
499
100
500
6.5
8.5
1.4
1.2
39
25
25
40
9
6
6
1
2
LTM8027
1.238
1.245
MAX
UNITS
3
8027f
kHz
kHz
mA
mA
kΩ
kΩ
μA
μA
μA
μA
V
V
V
V
V
V
V
V
V