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| 型号： | LTC3251EMSE-1.5#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 2/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SWITCHED CAP 10MSOP |
| 标准包装： | 2,500 |
| 类型： | 降压（降压），切换电容（充电泵） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 1.5V |
| 输入电压： | 2.7 V ~ 5.5 V |
| PWM 型： | 多重 |
| 频率 - 开关： | 1MHz ~ 1.6MHz |
| 电流 - 输出： | 500mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 10-MSOP |
LTC3251/
LTC3251-1.2/LTC3251-1.5
ABSOLUTE
AXI U
RATI GS
(Notes 1, 7)
V IN to GND ................................................... –0.3V to 6V
MD0, MD1, MODE and FB to GND . – 0.3V to (V IN + 0.3V)
I OUT (Note 2) ...................................................... 650mA
PACKAGE/ORDER I FOR ATIO
Operating Temperature Range (Note 3) ... –40 ° C to 85 ° C
Storage Temperature Range .................. – 65 ° C to 150 ° C
Lead Temperature (Soldering, 10 sec)................... 300 ° C
MD0
V IN
C1 +
C1 –
GND
1
2
3
4
5
TOP VIEW
11
10
9
8
7
6
MODE
MD1
C2 +
V OUT
C2 –
ORDER PART
NUMBER
LTC3251EMSE
MD0
V IN
C1 +
C1 –
GND
1
2
3
4
5
TOP VIEW
11
10
9
8
7
6
MODE
MD1
C2 +
V OUT
C2 –
ORDER PART
NUMBER
LTC3251EMSE-1.2
LTC3251EMSE-1.5
MSE PACKAGE
10-LEAD PLASTIC MSOP
EXPOSED PAD IS GND (PIN 11),
MUST BE SOLDERED TO PCB
T JMAX = 125 ° C, θ JA = 40 ° C/W, θ JC = 10 ° C/W
MSE PART MARKING
LTB4
MSE PACKAGE
10-LEAD PLASTIC MSOP
EXPOSED PAD IS GND (PIN 11),
MUST BE SOLDERED TO PCB
T JMAX = 125 ° C, θ JA = 40 ° C/W, θ JC = 10 ° C/W
MSE PART MARKING
LTAGM
LTABE
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.
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25 ° C. V IN = 3.6V, C1 = C2 = 1 μ F, C IN = 1 μ F, C OUT = 10 μ F,
V MODE = 0V for LTC3251-1.2V or LTC3251-1.5, V OUT = 1.5V for LTC3251, all capacitors ceramic, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V IN Minimum Operating Voltage
V IN Maximum Operating Voltage
(Notes 4,5)
(Note 5)
●
●
2.7
5.5
V
V
V IN Continuous Mode Operating Current
V IN Burst Mode Operating Current
V IN Super Burst Mode Operating Current
V IN Shutdown Current
I OUT = 0mA, V MD0 = 0, V MD1 = V IN
Spread Spectrum Disabled MODE = V IN
I OUT = 0mA, V MD0 = V IN , V MD1 = 0
Spread Spectrum Disabled MODE = V IN
I OUT = 0mA, V MD0 = V IN , V MD1 = V IN
Spread Spectrum Disabled MODE = V IN
V MD0 = 0V, V MD1 = 0V (Note 5)
●
●
●
●
●
●
●
3
3.75
35
35
10
10
0.01
5
6
60
60
15
15
1
mA
mA
μ A
μ A
μ A
μ A
μ A
V FB Regulation Voltage (LTC3251)
V OUT Regulation Voltage (LTC3251-1.2)
Continuous Mode or Burst Mode Operation
V OUT Regulation Voltage (LTC3251-1.2)
I OUT = 0mA, 2.7V ≤ V IN ≤ 5.5V
I OUT ≤ 200mA, 2.7V ≤ V IN ≤ 5.5V (Note 5)
I OUT ≤ 300mA, 2.8V ≤ V IN ≤ 5.5V (Note 5)
I OUT ≤ 500mA, 3V ≤ V IN ≤ 5.5V (Note 5)
I OUT ≤ 40mA
●
●
●
●
0.78
1.15
1.15
1.15
1.15
0.8
1.2
1.2
1.2
1.2
0.82
1.25
1.25
1.25
1.25
V
V
V
V
V
Super Burst Operation
V OUT Regulation Voltage (LTC3251-1.5)
Continuous Mode or Burst Mode Operation
V OUT Regulation Voltage (LTC3251-1.5)
I OUT ≤ 100mA, 3.1V ≤ V IN ≤ 5.5V (Note 5)
I OUT ≤ 200mA, 3.2V ≤ V IN ≤ 5.5V (Note 5)
I OUT ≤ 300mA, 3.3V ≤ V IN ≤ 5.5V (Note 5)
I OUT ≤ 500mA, 3.5V ≤ V IN ≤ 5.5V (Note 5)
I OUT ≤ 40mA
●
●
●
●
1.44
1.44
1.44
1.44
1.44
1.5
1.5
1.5
1.5
1.5
1.56
1.56
1.56
1.56
1.56
V
V
V
V
V
Super Burst Operation
I OUT Continuous Output Current (LTC3251)
I OUT Super Burst Output Current (LTC3251)
Load Regulation (LTC3251)
V MD0 = 0, V MD1 = V IN or V MD0 = V IN , V MD1 = 0
V MD0 = V IN , V MD1 = V IN
0mA ≤ I OUT ≤ 500mA, Referred to FB Pin
●
●
500
40
0.045
mA
mA
mV/mA
32511215fb
2
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