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| 型号： | LT3436EFE#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 2/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST ADJ 3A 16TSSOP |
| 标准包装： | 95 |
| 类型： | 升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.2 V ~ 34 V |
| 输入电压： | 3 V ~ 25 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 800kHz |
| 电流 - 输出： | 3A |
| 同步整流器： | 无 |
| 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 |
LT3436
ABSOLUTE M AXI M U M RATINGS
(Note 1)
PACKAGE/ORDER I N FOR M ATIO N
Input Voltage .......................................................... 25V
TOP VIEW
ORDER PART NUMBER
Switch Voltage ......................................................... 35V
SHDN Pin ............................................................... 25V
GND
V IN
SW
1
2
3
16 GND
15 NC
14 SYNC
LT3436EFE
FB Pin Current ....................................................... 1mA
SW
4
17
13 V C
SYNC Pin Current .................................................. 1mA
Operating Junction Temperature Range (Note 2)
LT3436E .......................................... – 40 ° C to 125 ° C
Storage Temperature Range ................ – 65 ° C to 150 ° C
Lead Temperature (Soldering, 10 sec)................. 300 ° C
GND 5 12 FB
GND 6 11 SHDN
NC 7 10 NC
GND 8 9 GND
FE PACKAGE
16-LEAD PLASTIC TSSOP
EXPOSED PAD IS GND (PIN 17),
MUST BE SOLDERED TO PCB
T JMAX = 125 ° C, θ JA = 45 ° C/W,
θ JC(PAD) = 10 ° C/W
FE PART MARKING
3436EFE
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 = 15V, V C = 0.8V, SHDN, SYNC and switch open unless otherwise noted.
PARAMETER
Recommended Operating Voltage
CONDITION
●
MIN
3
TYP
MAX
25
UNITS
V
Maximum Switch Current Limit
●
3
4
6
A
Oscillator Frequency
Switch On Voltage Drop
V IN Undervoltage Lockout
V IN Supply Current
3.3V < V IN < 25V
I SW = 3A
(Note 3)
I SW = 0A
●
●
●
●
640
2.47
800
330
2.6
1
960
550
2.73
1.3
kHz
mV
V
mA
V IN Supply Current/I SW
I SW = 3A
15
mA/A
Shutdown Supply Current
Feedback Voltage
V SHDN = 0V, V IN = 25V, V SW = 25V
3V < V IN < 25V, 0.4V < V C < 0.9V
●
●
1.182
1.176
11
1.2
25
45
1.218
1.224
μ A
μ A
V
V
FB Input Current
FB to V C Voltage Gain
0.4V < V C < 0.9V
●
0
150
– 0.2
350
– 0.4
μ A
FB to V C Transconductance
V C Pin Source Current
V C Pin Sink Current
? I VC = ± 10 μ A
V FB = 1V
V FB = 1.4V
●
●
●
500
– 85
70
850
– 120
110
1300
– 165
165
μ Mho
μ A
μ A
V C Pin to Switch Current Transconductance
4.8
A/V
V C Pin Minimum Switching Threshold
V C Pin 3A I SW Threshold
Duty Cycle = 0%
0.3
0.9
V
V
Maximum Switch Duty Cycle
V C = 1.2V, I SW = 350mA
V C = 1.2V, I SW = 1A
●
85
80
90
%
%
SHDN Threshold Voltage
●
1.28
1.35
1.42
V
SHDN Input Current (Shutting Down)
SHDN Threshold Current Hysteresis
SHDN = 60mV Above Threshold
SHDN = 100mV Below Threshold
●
–7
4
–10
7
–13
10
μ A
μ A
SYNC Threshold Voltage
SYNC Input Frequency
1
1.5
2.2
1.4
V
MHz
SYNC Pin Resistance
I SYNC = 1mA
20
k ?
3436fa
2
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