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LTM4676A データシート(PDF) 4 Page - Linear Technology

部品番号 LTM4676A
部品情報  Dual 13A or Single 26A 關Module Regulator with Digital Power System Management
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メーカー  LINER [Linear Technology]
ホームページ  http://www.linear.com
Logo LINER - Linear Technology

LTM4676A データシート(HTML) 4 Page - Linear Technology

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LTM4676A
4
4676afa
For more information www.linear.com/LTM4676A
elecTrical characTerisTics The
l
denotes the specifications which apply over the specified internal
operating temperature range (Note 2). Specified as each individual output channel (Note 4). TA = 25°C, VIN = 12V, RUNn = 5V,
FREQUENCY_SWITCH = 500kHz and VOUTn commanded to 1.000V unless otherwise noted. Configured with factory-default EEPROM
settings and per Test Circuit 1, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIN
Input DC Voltage
Test Circuit 1
Test Circuit 2; VIN_OFF < VIN_ON = 4.25V
l
l
5.75
4.5
26.5
5.75
V
V
VOUTn
Range of Output Voltage
Regulation
VOUT0 Differentially Sensed on VOSNS0+/VOSNS0– Pin-Pair;
VOUT1 Differentially Sensed on VOSNS1/SGND Pin-Pair;
Commanded by Serial Bus or with Resistors Present at Start-Up on
VOUTnCFG and/or VTRIMnCFG
l
l
0.5
0.5
5.5
5.5
V
V
VOUTn(DC)
Output Voltage, Total
Variation with Line and
Load
(Note 5)
VOUTn Low Range (MFR_PWM_MODEn[1] = 1b),
FREQUENCY_SWITCH = 250kHz
Digital Servo Engaged (MFR_PWM_MODEn[6] = 1b)
Digital Servo Disengaged (MFR_PWM_MODEn[6] = 0b)
l
0.995
0.985
1.000
1.000
1.005
1.015
V
V
Input Specifications
IINRUSH(VIN)
Input Inrush Current at
Start-Up
Test Circuit 1, VOUTn  = 1V, VIN = 12V; No Load Besides Capacitors;
TON_RISEn = 3ms
400
mA
IQ(SVIN)
Input Supply Bias Current Forced Continuous Mode, MFR_PWM_MODEn[0] = 1b
RUNn = 5V, RUN1-n = 0V
Shutdown, RUN0 = RUN1 = 0V
40
20
mA
mA
IS(VINn,PSM)
Input Supply Current in
Pulse-Skipping Mode
Operation
Pulse-Skipping Mode, MFR_PWM_MODEn[0] = 0b,
IOUTn = 100mA
20
mA
IS(VINn,FCM)
Input Supply Current in
Forced-Continuous Mode
Operation
Forced Continuous Mode, MFR_PWM_MODEn[0] = 1b
IOUTn = 100mA
IOUTn = 13A
40
1.37
mA
A
IS(VINn,SHUTDOWN) Input Supply Current in
Shutdown
Shutdown, RUNn = 0V
50
µA
Output Specifications
IOUTn
Output Continuous
Current Range
(Note 6)
0
13
A
∆VOUTn(LINE)
VOUTn
Line Regulation Accuracy Digital Servo Engaged (MFR_PWM_MODEn[6] = 1b)
Digital Servo Disengaged (MFR_PWM_MODEn[6] = 0b)
SVIN and VINn Electrically Shorted Together and INTVCC Open Circuit;
IOUTn = 0A, 5.75V ≤ VIN ≤ 26.5V, VOUT Low Range
(MFR_PWM_MODEn[1] = 1b) FREQUENCY_SWITCH = 250kHz
(Referenced to 12VIN) (Note 5)
l
0.03
0.03
±0.2
%
%/V
∆VOUTn(LOAD)
VOUTn
Load Regulation
Accuracy
Digital Servo Engaged (MFR_PWM_MODEn[6] = 1b)
Digital Servo Disengaged (MFR_PWM_MODEn[6] = 0b)
0A ≤ IOUTn ≤ 13A, VOUT Low Range, (MFR_PWM_MODEn[1] = 1b)
FREQUENCY_SWITCH = 250kHz (Note 5)
l
0.03
0.2
0.5
%
%
VOUTn(AC)
Output Voltage Ripple
10
mVP-P
fS (Each Channel) VOUTn Ripple Frequency
FREQUENCY_SWITCH Set to 500kHz (0xFBE8)
l
462.5
500
537.5
kHz
∆VOUTn(START)
Turn-On Overshoot
TON_RISEn = 3ms (Note 12)
8
mV
tSTART
Turn-On Start-Up Time
Time from VIN Toggling from 0V to 12V to Rising Edge of GPIOn.
TON_DELAYn = 0ms, TON_RISEn = 3ms,
MFR_GPIO_PROPAGATEn = 0x0100,
MFR_GPIO_RESPONSEn = 0x0000
l
35
40
ms


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