Linear ANALOG DEVICES LTM4644EY PBF Series Manual page 3

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
SYMBOL PARAMETER
Switching Regulator Section: per Channel
V , SV Input DC Voltage
IN IN
V Output Voltage Range
OUT(RANGE)
V Output Voltage, Total Variation
OUT(DC)
with Line and Load
V RUN Pin On Threshold
RUN
I Input Supply Bias Current
Q(SVIN)
I Input Supply Current
S(VIN)
I Output Continuous Current Range V
OUT(DC)
ΔV (Line)/V Line Regulation Accuracy
OUT OUT
ΔV (Load)/V Load Regulation Accuracy
OUT OUT
V Output Ripple Voltage
OUT(AC)
ΔV Turn-On Overshoot
OUT(START)
t Turn-On Time
START
ΔV Peak Deviation for Dynamic Load Load: 0% to 50% to 0% of Full Load, C
OUTLS
t Settling Time for Dynamic Load
SETTLE
Step
I Output Current Limit
OUTPK
V Voltage at FB Pin
FB
I Current at FB Pin
FB
R Resistor Between V
FBHI
Pins
I Track Pin Soft-Start Pull-Up
TRACK/SS
Current
V V Undervoltage Lockout
IN(UVLO) IN
t Minimum On-Time
ON(MIN)
t Minimum Off-Time
OFF(MIN)
V PGOOD Trip Level
PGOOD
I PGOOD Leakage
PGOOD
V PGOOD Voltage Low
PGL
V Internal V
INTVCC CC
V Load Reg INTV Load Regulation
INTVCC CC
f Oscillator Frequency
OSC
CLKIN CLKIN Threshold
= 25°C (Note 2). V
A
CONDITIONS
SV = V
IN IN
C = 22µF, C
IN
MODE = INTV
LTM4644: R
LTM4644-1: R
V Rising
RUN
V = 12V, V
IN
V = 12V, V
IN
Shutdown, RUN = 0, V
V = 12V, V
IN
= 12V, V
IN
V = 1.5V, V
OUT
V = 1.5V, I
OUT
I = 0A, C
OUT
V = 1.5V
OUT
I = 0A, C
OUT
V = 1.5V
OUT
C = 100µF Ceramic, No Load, TRACK/SS = 0.01µF,
OUT
V = 12V, V
IN
Ceramic, V
Load: 0% to 50% to 0% of Full Load, C
Ceramic, V
V = 12V, V
IN
I = 0A, V
OUT
I = 0A, V
OUT
(Note 3)
and FB LTM4644 Only
OUT
TRACK/SS = 0V
V Falling
IN
V Hysteresis
IN
(Note 3)
(Note 3)
V With Respect to Set Output
FB
V Ramping Negative
FB
V Ramping Positive
FB
I = 1mA
PGOOD
Voltage SV = 4V to 14V
IN
I = 0mA to 20mA
CC
For more information
LTM4644/LTM4644-1
The denotes the specifications which apply over the full operating
l
= 12V, per the typical application.
IN
= 100µF Ceramic,
OUT
,V = 4V to 14V, I = 0A to 4A (Note 4)
CC IN OUT
= 40.2k
FB(BOT)
= 60.4k, R = 40.2k
FB(TOP) FB(BOT)
= 1.5V, MODE = INTV
OUT CC
= 1.5V, MODE = GND
OUT
= 12V
IN
= 1.5V, I = 4A
OUT OUT
= 1.5V (Note 4)
OUT
= 4V to 14V, I = 0A
IN OUT
= 0A to 4A
OUT
= 100µF Ceramic, V = 12V,
OUT IN
= 100µF Ceramic, V = 12V,
OUT IN
= 1.5V
OUT
= 47µF
OUT
= 12V, V = 1.5V
IN OUT
= 47µF
OUT
= 12V, V = 1.5V
IN OUT
= 1.5V
OUT
= 1.5V, 0°C to 125°C
OUT
= 1.5V, –40°C to 125°C
OUT
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MIN TYP MAX UNITS
4 14
l
0.6 5.5
l
1.477 1.50 1.523
l
1.1 1.2 1.3
6
2
11
0.62
0 4
0.04 0.15
l
0.5 1
l
5
30
2.5
160
40
6 7
0.594 0.60 0.606
0.592 0.60 0.608
l
±30
60.05 60.40 60.75
2.5 4
2.4 2.6 2.8
350
40
70
–13 –10 –7
7 10 13
2
0.02 0.1
3.2 3.3 3.4
0.5
1
0.7
Rev. G
3
V
V
V
V
mA
mA
µA
A
A
%/V
%
mV
mV
ms
mV
µs
A
V
V
nA
kΩ
µA
V
mV
ns
ns
%
%
µA
V
V
%
MHz
V