参数资料
型号: LT3437IDD#TRPBF
厂商: Linear Technology
文件页数: 2/28页
文件大小: 0K
描述: IC REG BUCK ADJ 0.5A 10DFN
标准包装: 2,500
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 1.25 V ~ 54 V
输入电压: 3.3 V ~ 60 V
PWM 型: 电流模式,混合
频率 - 开关: 200kHz
电流 - 输出: 500mA
同步整流器:
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 10-WFDFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 10-DFN(3x3)
LT3437
ABSOLUTE
(Note 1)
AXI U RATI GS
V IN , SHDN , BIAS, SW Operating ............................. 60V
V IN , SHDN 100ms Transient, <15% Duty Cycle ....... 80V
BOOST Pin Above SW ............................................ 35V
BOOST Pin Voltage Operating ................................. 75V
BOOST Pin 100ms Transient, <15% Duty Cycle ...... 85V
SYNC, C SS , FB .......................................................... 6V
Operating Junction Temperature Range
LT3437EDD (Note 2) ....................... – 40 ° C to 125 ° C
LT3437IDD (Note 2) ........................ – 40 ° C to 125 ° C
LT3437EFE (Note 2) ........................ – 40 ° C to 125 ° C
LT3437IFE (Note 2) ......................... – 40 ° C to 125 ° C
LT3437HFE (Note 2) .......................... –40 ° C to 140 ° C
Storage Temperature Range ................. – 65 ° C to 125 ° C
DD Package ....................................... –65 ° C to 125 ° C
FE Package ........................................ –65 ° C to 150 ° C
PACKAGE/ORDER I FOR ATIO
TOP VIEW
NC
1
16 NC
TOP VIEW
SW
2
15 SHDN
SW
1
10 SHDN
NC
3
14 SYNC
V IN
2
9 SYNC
V IN
4
17
13 NC
BOOST
GND
C SS
3
4
5
11
8 FB
7 V C
6 BIAS
NC
BOOST
NC
5
6
7
12 FB
11 V C
10 BIAS
DD PACKAGE
10-LEAD (3mm × 3mm) PLASTIC DFN
θ JA = 45 ° C/W, θ JC(PAD) = 10 ° C/W
GND
8 9
FE PACKAGE
16-LEAD PLASTIC TSSOP
C SS
EXPOSED PAD IS GND (PIN 11)
MUST BE SOLDERED TO GND (PIN 4)
θ JA = 45 ° C/W, θ JC(PAD) = 10 ° C/W
EXPOSED PAD IS GND (PIN 17)
MUST BE SOLDERED TO GND (PIN 8)
ORDER PART NUMBER
LT3437EDD
LT3437IDD
DD PART MARKING
LBDJ
LBDK
ORDER PART NUMBER
LT3437EFE
LT3437IFE
LT3437HFE
FE PART MARKING
3437EFE
3437IFE
3437HFE
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 –40 ° C to 125 ° C
temperature range, otherwise specifications are at T J = 25 ° C. V IN = 12V, SHDN = 12V, BIAS = 5V, FB = 1.25V, C SS /SYNC = 0V unless
otherwise noted.
SYMBOL
V SHDN
PARAMETER
SHDN Threshold
CONDITIONS
MIN
1.15
TYP
1.3
MAX
1.45
UNITS
V
I SHDN
I VINS
SHDN Input Current
Minimum Input Voltage (Note 3)
Supply Shutdown Current
Supply Sleep Current (Note 4)
SHDN = 12V
SHDN = 0V, BOOST = 0V, FB/PGFB = 0V, BIAS = 0V
BIAS = 0V, FB = 1.35V
FB = 1.35V
5
2.5
0.1
150
45
30
3
2
300
75
μ A
V
μ A
μ A
μ A
3437fc
2
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