参数资料
型号: LT3434IFE
厂商: Linear Technology
文件页数: 2/24页
文件大小: 0K
描述: IC REG BUCK ADJ 3A 16TSSOP
标准包装: 95
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: 3A
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: 16-TSSOP(0.173",4.40mm)裸露焊盘
包装: 管件
供应商设备封装: 16-TSSOP-EP
LT3434
ABSOLUTE
(Note 1)
AXI U RATI GS
PACKAGE/ORDER I FOR ATIO
V IN , SHDN, BIAS, PGOOD, SW ............................... 60V
TOP VIEW
ORDER PART
BOOST Pin Above SW ............................................ 35V
BOOST Pin Voltage ................................................. 68V
SYNC, C SS , PGFB, FB ................................................ 6V
Operating JunctionTemperature Range
LT3434EFE (Note 2) ........................ – 40 ° C to 125 ° C
LT3434IFE (Note 2) ......................... – 40 ° C to 125 ° C
Storage Temperature Range ................. – 65 ° C to 150 ° C
Lead Temperature (Soldering, 10 sec).................. 300 ° C
NC
SW
V IN
V IN
SW
BOOST
C T
GND
1
2
3
4
5
6
7
8
17
16 PGOOD
15 SHDN
14 SYNC
13 PGFB
12 FB
11 V C
10 BIAS
9 C SS
NUMBER
LT3434EFE
LT3434IFE
FE PART
MARKING
FE PACKAGE
16-LEAD PLASTIC TSSOP
T JMAX = 125 ° C, θ JA = 45 ° C/W, θ JC(PAD) = 10 ° C/W
3434EFE
3434IFE
EXPOSED PAD IS GND (PIN 17)
MUST BE SOLDERED TO GND (PIN 8)
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 J = 25 ° C. V IN = 12V, SHDN = 12V, BIAS = 5V, FB/PGFB = 1.25V,
C SS /SYNC = 0V unless otherwise noted.
SYMBOL
V SHDN
I SHDN
I VINS
I VIN
PARAMETER
SHDN Threshold
SHDN Input Current
Minimum Input Voltage (Note 3)
Supply Shutdown Current
Supply Sleep Current (Note 4)
Supply Quiescent Current
CONDITIONS
SHDN = 12V
SHDN = 0V, BOOST = 0V, FB/PGFB = 0V
BIAS = 0V, FB = 1.35V
FB = 1.35V
BIAS = 0V, FB = 1.15V
MIN
1.15
TYP
1.3
5
2.4
0.1
170
45
3.2
MAX
1.45
20
3
2
250
75
6
UNITS
V
μ A
V
μ A
μ A
μ A
mA
BIAS = 5V, FB = 1.15V
2.6
5
mA
Minimum BIAS Voltage (Note 5)
FB = 1.15V
2.7
3.1
V
I BIASS
I BIAS
BIAS Sleep Current (Note 4)
BIAS Quiescent Current
Minimum Boost Voltage (Note 6)
Input Boost Current (Note 7)
SYNC = 3.3V
I SW = 3A
I SW = 3A
110
700
1.8
65
180
900
85
μ A
μ A
V
mA
V REF
Reference Voltage (V REF )
3.3V < V VIN < 60V
1.225
1.25
1.275
V
I FB
FB Input Bias Current
EA Voltage Gain (Note 8)
75
900
200
nA
V/V
EA Voltage g m
EA Source Current
EA Sink Current
dI(V C )= ± 10 μ A
FB = 1.15V
FB = 1.35V
400
20
15
650
40
30
900
55
40
μ Mho
μ A
μ A
V C to SW g m
6
A/V
3434fb
2
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