參數(shù)資料
型號(hào)： LTC3541EDD#TRPBF
廠商： Linear Technology
文件頁(yè)數(shù)： 2/20頁(yè)
文件大小： 368K
描述： IC REG DL BCK/LINEAR SYNC 10-DFN
產(chǎn)品培訓(xùn)模塊： More Information on LDOs
標(biāo)準(zhǔn)包裝： 2,500
拓?fù)洌?/td> 降壓（降壓）同步（1），線性（LDO）（1）
功能： 任何功能
輸出數(shù)： 2
頻率 - 開關(guān)： 2.25MHz
電壓/電流 - 輸出 1： 0.8 V ~ 5 V，500mA
電壓/電流 - 輸出 2： 0.4 V ~ 4.1 V，300mA
帶 LED 驅(qū)動(dòng)器： 無(wú)
帶監(jiān)控器： 無(wú)
帶序列發(fā)生器： 是
電源電壓： 0.9 V ~ 5.5 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 10-WFDFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 10-DFN（3x3）
包裝： 帶卷 (TR)
LTC3541

3541fa
Supply Voltages:
V
IN
, LV
IN
..................................................0.3V to 6V
LV
IN
 V
IN
..........................................................<0.3V
Pin Voltages:
ENVLDO, ENBUCK, MODE, SW,
LFB, BUCKFB .............................0.3V to (V
IN
+ 0.3V)
Linear Regulator I
OUT(MAX)
(100ms) (Note 9) ......100mA
Operating Ambient Temperature Range
(Note 2) ....................................................40癈 to 85癈
Junction Temperature (Note 5) .............................125癈
Storage Temperature Range ...................65癈 to 125癈
(Note 1)
 
The ?/SPAN> denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
 = 25癈. V
IN
 = 3.6V unless otherwise specified (Note 2)
LECTRICAL CHARACTERISTICS
BSOLUTE AXI U RATI GS   W
W
U
ACKAGE/ORDER I FOR ATIO
U
W
TOP VIEW
11
DD PAcKAGE
1 -LEAD  mm?mm PLA TI DFN
10
9
6
7
8
4
5
3
2
1
SW
ENVLDO
MODE
GND
LV
IN
V
IN
NBUcK
UcKFB
LFB
LV
OUT
T
JMAX
= 125癈, ?/DIV>
JA
= 43癈/W
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
ORDER PART NUMBER   DD PART MARKING
LTC3541EDD
LCBS
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
SYMBOL   PARAMETER
CONDITIONS
MIN    TYP   MAX  UNITS
I
PK
Peak Inductor Current
V
IN
= 4.2V (Note 8)
0.8    0.95   1.25
A
I
BUCKFB
BUCKFB Pin Input Current
V
BUCKFB
= 0.9V
?/DIV>
?0    nA
I
LFB
LFB Pin Input Current
V
LFB
= 0.45V
?/DIV>
200    40
nA
V
IN
Input Voltage Range
(Note 4)
?SPAN class="pst LTC3541EDD-TRPBF_2465890_11">   2.7
5.5
V
V
IN(LINEREG)
Buck V
IN
Line Regulation
V
IN
= 2.7V to 5.5V, ENBUCK = V
IN
,
ENVLDO = 0V, MODE = V
IN
(Note 6)
?/DIV>
0.04   0.4    %/V
VLDO V
IN
Line Regulation
(Referred to LFB)
V
IN
= 2.7V to 5.5V, LV
OUT
= 1.2V, ENBUCK = V
IN
,
ENVLDO = V
IN
, I
OUT(VLDO)
= 100mA, LV
IN
= 1.5V
0.6
mV/V
Linear Regulator V
IN
Line
Regulation (Referred to LFB)
V
IN
= 2.7V to 5.5V, LV
OUT
= 1.2V, ENBUCK = 0V,
ENVLDO = V
IN
, I
OUT(LREG)
= 10mA
0.6
mV/V
LV
IN(LINEREG)
LV
IN
Line Regulation
(Referred to LFB)
LV
IN
= 0.9V to 5.5V, V
IN
= 5.5V, LV
OUT
= 0.4V,
ENBUCK = V
IN
, ENVLDO = V
IN
, MODE = V
IN
,
I
OUT(VLDO)
= 100mA
0.3
mV/V
VLDO
DO
LV
IN
 LV
OUT
Dropout Voltage
(Note 9)
LV
IN
= 1.5V, ENBUCK = V
IN
, ENVLDO = V
IN
,
MODE = V
IN
, I
OUT(VLDO)
= 50mA, V
LFB
= 0.3V
28    60    mV
V
LOADREG
Buck Output Load Regulation    ENBUCK = V
IN
, ENVLDO = 0V, MODE = V
IN
(Note 6)
0.5
%
VLDO Output Load Regulation    I
OUT(VLDO)
= 1mA  300mA, LV
IN
= 1.5V, LV
OUT
= 1.2V,
ENBUCK = V
IN
, ENVLDO = V
IN
, MODE = V
IN
?/DIV>
0.25   0.5
%
Linear Regulator Output Load    I
OUT(LREG)
= 1mA  30mA, LV
OUT
= 1.2V,
ENBUCK = 0V, ENVLDO = V
IN
?/DIV>
0.25   0.5
%
V
BUCKFB
Reference Regulation Voltage
(Note 6)
ENBUCK = V
IN
, ENVLDO = 0V, T
A
= 25癈
0.784    0.8   0.816    V
ENBUCK = V
IN
, ENVLDO = 0V, 0癈 d T
A
d 85癈
0.782    0.8   0.818    V
ENBUCK = V
IN
, ENVLDO = 0V, 40癈 d T
A
d 85癈    ?/SPAN>   0.78    0.8   0.82
V
V
LFB
Reference Regulation Voltage
(Note 7)
ENBUCK = 0V, ENVLDO = V
IN
, T
A
= 25癈
0.392    0.4   0.408    V
ENBUCK = 0V, ENVLDO = V
IN
, 0癈 d T
A
d 85癈
0.391    0.4   0.409    V
ENBUCK = 0V, ENVLDO = V
IN
, 40癈 d T
A
d 85癈
?/DIV>
0.390    0.4   0.410    V
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