參數(shù)資料
型號(hào): LTC3672BEDC-1#TRPBF
廠商: Linear Technology
文件頁數(shù): 2/12頁
文件大?。?/td> 172K
描述: IC REG TRPL BCK/LINEAR 8-DFN
標(biāo)準(zhǔn)包裝: 2,500
拓?fù)洌?/td> 降壓(降壓)同步(1),線性(LDO)(2)
功能: 任何功能
輸出數(shù): 3
頻率 - 開關(guān): 2.25MHz
電壓/電流 - 輸出 1: 1.8V,400mA
電壓/電流 - 輸出 2: 1.2V,150mA
電壓/電流 - 輸出 3: 2.8V,150mA
帶 LED 驅(qū)動(dòng)器:
帶監(jiān)控器:
帶序列發(fā)生器:
電源電壓: 2.9 V ~ 5.5 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 8-WFDFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 8-DFN(2x2)
包裝: 帶卷 (TR)
LTC3672B-1
2
3672B1f
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS
V
IN
 ...............................................................0.3V to 6V
V
IN1
, BUCKOUT, ENALL, SW,
LDO2 ...........0.3V to the lesser of (V
IN
 + 0.3V) or 6V
LDO1 .............0.3V to the lesser of (V
IN1
 + 0.3V) or 6V
Junction Temperature ...........................................125癈
Operating Temperature Range......................40 to 85癈
Storage Temperature Range .......................65 to 125癈
(Notes 1, 2, 3)
TOP VIEW
SW
GND
ENALL
BUCKOUT
V
IN
LDO2
LDO1
V
IN1
DC PACKAGE
8-LEAD (2mm 2mm) PLASTIC DFN
9
4
1
2
3
6
5
7
8
T
JMAX
 = 125癈, ?/DIV>
JA
 = 102癈/W, ?/DIV>
JC
 = 20癈/W
EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
ELECTRICAL CHARACTERISTICS
 
The ?/SPAN> denotes the speci cations which apply over the full operating
temperature range, otherwise speci cations are at T
A
 = 25癈. V
IN
 = 3.6V, unless otherwise noted.
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3672BEDC-1#PBF    LTC3672BEDC-1#TRPBF  LCWH
8-Lead (2mm ?2mm) Plastic DFN    40癈 to 85癈
Consult LTC Marketing for parts speci ed with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based  nish parts.
*For more information on lead free part marking, go to: http://www.linear.com/leadfree/ 
For more information on tape and reel speci cations, go to: http://www.linear.com/tapeandreel/
SYMBOL
PARAMETER
CONDITIONS
MIN   TYP   MAX   UNITS
V
IN
Input Voltage Range
?SPAN class="pst LTC3672BEDC-1-TRPBF_2465726_12">   2.9
5.5
V
V
UVLO
V
IN
 Undervoltage Lockout Threshold
V
IN
 Rising
1.7    2
V
Undervoltage Lockout Hysteresis
12    100    mV
I
Q,VIN
V
IN
 Quiescent Current
All Outputs Enabled, No Load
Shutdown
(Note 4)
V
BUCKOUT
 = 1.9V
V
ENALL
 = 0V
260   400
1
I
Q,VIN1
V
IN1
 Quiescent Current
All Outputs Enabled, No Load
Shutdown
V
IN1
 = 1.8V
V
ENALL
 = 0V
2.3    5
1
V
IL
ENALL Pin Logic Low Voltage
?/DIV>
0.4
V
V
IH
ENALL Pin Logic High Voltage
?SPAN class="pst LTC3672BEDC-1-TRPBF_2465726_12">   1.2
V
R
ENALL
ENALL Pin Pulldown Resistance
5.5
M?/DIV>
Synchronous Buck Regulator
f
OSC
Oscillator Frequency
1.8   2.25   2.7    MHz
V
BUCKOUT
Regulated Output Voltage
?SPAN class="pst LTC3672BEDC-1-TRPBF_2465726_12">  1.755   1.8   1.845
V
I
MAXP
PMOS Switch Maximum Peak Current (Note 5)
550   800   1100    mA
I
OUT,BUCK
Available Output Current
400
mA
R
P,BUCK
PMOS Switch On-Resistance
0.6
?/DIV>
R
N,BUCK
NMOS Switch On-Resistance
0.7
?/DIV>
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