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ELECTRICAL CHARACTERISTICS
operating temperature range (Note 2). Specified as each individual output channel (Note 4). T
FREQUENCY_SWITCH = 350kHz and V
settings and per Test Circuit 1, unless otherwise noted.
SYMBOL
PARAMETER
V
Input DC Voltage
IN
V
Range of Output Voltage Regulation V
OUTn
V
Output Voltage, Total Variation with
OUTn(DC)
Line and Load
V
Undervoltage Lockout Threshold,
UVLO
When V
< 4.3V
IN
Input Specifications
I
Input Inrush Current at
INRUSH(VIN)
Start-Up
I
Input Supply Bias Current
Q(SVIN)
I
Input Supply Current in Pulse-
S(VINn,PSM)
Skipping Mode Operation
I
Input Supply Current in Forced-
S(VINn,FCM)
Continuous Mode Operation
I
Input Supply Current in Shutdown
S(VINn,SHUTDOWN)
Output Specifications
I
Output Continuous Current Range
OUTn
∆V
Line Regulation Accuracy
OUTn(LINE)
V
OUTn
∆V
Load Regulation Accuracy
OUTn(LOAD)
V
OUTn
V
Output Voltage Ripple
OUTn(AC)
f
(Each Channel) V
Ripple Frequency
S
OUTn
∆V
Turn-On Overshoot
OUTn(START)
t
Turn-On Start-Up Time
START
t
Turn-On Delay Time
DELAY(0ms)
∆V
Peak Output Voltage Deviation for
OUTn(LS)
Dynamic Load Step
The
denotes the specifications which apply over the specified internal
l
commanded to 1.000V unless otherwise noted. Configured with factory-default EEPROM
OUTn
CONDITIONS
Test Circuit 1
Test Circuit 2; VIN_OFF < VIN_ON = 4V
Differentially Sensed on V
OUT0
V
Differentially Sensed on V
OUT1
Commanded by Serial Bus or with Resistors Present at
Start-Up on V
OUTn_CFG
Digital Servo Engaged (MFR_PWM_MODEn[6] = 1b)
Digital Servo Disengaged (MFR_PWM_MODEn[6] = 0b)
V
Commanded to 1.000V, V
OUTn
(MFR_PWM_MODEn[1] = 1b) (Note 5)
V
Falling
INTVCC
V
Rising
INTVCC
Test Circuit 1, V
OUTn
Capacitors; TON_RISE
Forced Continuous Mode, MFR_PWM_MODEn[0] = 1b
RUNn = 3.3V
Shutdown, RUN0 = RUN1 = 0V
Pulse-Skipping Mode, MFR_PWM_MODEn[0] = 0b,
I
= 100mA
OUTn
Forced Continuous Mode, MFR_PWM_MODEn[0] = 1b
I
= 100mA
OUTn
I
= 50A
OUTn
Shutdown, RUNn = 0V
(Note 6) Utilizing MFR_PWM_MODE[7] = 1 and Using
~I
= 50A, Page 89
OUT
Digital Servo Engaged (MFR_PWM_MODEn[6] = 1b)
Digital Servo Disengaged (MFR_PWM_MODEn[6] = 0b)
SV
and V
Electrically Shorted Together and INTV
IN
INn
Open Circuit; I
OUTn
(MFR_PWM_MODEn[1] = 1b), FREQUENCY_SWITCH =
350kHz (Note 5)
Digital Servo Engaged (MFR_PWM_MODEn[6] = 1b)
Digital Servo Disengaged (MFR_PWM_MODEn[6] = 0b)
0A ≤ I
≤ 50A, V
OUTn
MODEn[1] = 1b) (Note 5)
FREQUENCY_SWITCH Set to 350kHz (0xFABC)
TON_RISEn = 3ms (Note 12)
Time from V
Toggling from 0V to 12V to Rising Edge
IN
PGOODn. TON_DELAYn = 0ms, TON_RISEn = 3ms
Time from First Rising Edge of RUNn to Rising Edge of
PGOODn . TON_DELAYn = 0ms, TON_RISEn = 3ms,
V
Having Been Established for at Least 70ms
IN
Load: 0A to 12.5A and 12.5A to 0A at 10A/µs,
V
= 1V, V
= 12V (Note 12)
OUTn
IN
For more information
= 25°C, V
A
+
–
/V
Pin-Pair;
OSNS0
OSNS0
+
–
/V
Pin-Pair;
OSNS1
OSNS1
Low Range
OUTn
=1V, V
= 12V; No Load Besides
IN
= 3ms
n
= 0A, 5.0V ≤ V
≤ 16V, V
Low Range
IN
OUT
Low Range, (MFR_PWM_
OUT
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LTM4700
= 12V, RUNn = 3.3V,
IN
MIN
TYP
MAX
5.75
16
l
4.5
5.75
l
0.5
1.8
l
0.5
1.8
l
0.995
1.000
1.005
l
0.985
1.000
1.015
3.55
3.90
100
50
25
20
110
5.8
500
0
50
0.03
0.3
0.5
l
CC
0.03
0.2
0.75
l
10
320
350
370
l
8
30
l
2.95
3.3
3.75
l
55
UNITS
V
V
V
V
V
V
V
V
mA
mA
mA
mA
mA
A
µA
A
%/V
%/V
%
%
mV
P-P
kHz
mV
ms
ms
mV
Rev. B
5
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