参数资料
型号: LTC3427EDC#TRPBF
厂商: Linear Technology
文件页数: 2/12页
文件大小: 0K
描述: IC REG BOOST SYNC ADJ 0.5A 6DFN
标准包装: 2,500
类型: 升压(升压)
输出类型: 可调式
输出数: 1
输出电压: 1.8 V ~ 5.25 V
输入电压: 1.8 V ~ 5 V
PWM 型: 电流模式
频率 - 开关: 1.25MHz
电流 - 输出: 500mA
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 6-WFDFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 6-DFN-EP(2x2)
LTC3427
ABSOLUTE
AXI U
RATI GS
PACKAGE/ORDER I FOR ATIO
(Note 1)
V IN , V OUT Voltages ...................................... – 0.3V to 6V
SHDN, FB Voltages ..................................... – 0.3V to 6V
TOP VIEW
SW Voltage
6
5
4
DC .......................................................... – 0.3V to 6V
Pulsed < 100ns ...................................... – 0.3V to 7V
Operating Temperature Range
(Notes 2, 5) ............................................ – 40 ° C to 85 ° C
Storage Temperature Range ................ – 65 ° C to 125 ° C
7
1 2 3
DC PACKAGE
6-LEAD (2mm × 2mm) PLASTIC DFN
T JMAX = 125 ° C, θ JA = 60 ° C/W TO 85 ° C/W
EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PCB
ORDER PART NUMBER
LTC3427EDC
DC PART MARKING
LBSY
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 specifications which apply over the full operating temperature range, otherwise specifications are T A = 25 ° C.
V IN = 2.4V, V OUT = 3.3V unless otherwise specified.
PARAMETER
Minimum Start-Up Voltage
Output Voltage Adjust Range
CONDITIONS
I LOAD < 1mA
MIN
1.8
TYP
1.6
MAX
1.8
5.25
UNITS
V
V
Feedback Voltage
Feedback Input Current
Quiescent Current—Shutdown
Quiescent Current—Active
NMOS Switch Leakage
PMOS Switch Leakage
V FB = 1.24V
V SHDN = 0V, V OUT = 0V
V FB = 1.5V (Note 3)
1.215
1.24
1
0.01
350
0.1
0.1
1.265
50
1
550
5
5
V
nA
μ A
μ A
μ A
μ A
NMOS Switch-On Resistance
PMOS Switch-On Resistance
0.525
0.575
?
?
NMOS Current Limit
Current Limit Delay to Output
(Note 4)
500
40
mA
ns
Maximum Duty Cycle
Minimum Duty Cycle
V FB = 1V
V FB = 1.5V
80
87
0
%
%
Frequency
0.9
1.25
1.5
MHz
SHDN Input High
SHDN Input Low
1
0.35
V
V
SHDN Input Current
Soft-Start Time
V SHDN = 5.5V
0.01
2
1
μ A
ms
3427fa
2
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