参数资料
型号: LTC3409IDD#TRPBF
厂商: Linear Technology
文件页数: 5/16页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ 0.6A 8DFN
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: 0.62 V ~ 5.5 V
输入电压: 1.6 V ~ 5.5 V
PWM 型: 电流模式,混合
频率 - 开关: 1.7MHz ~ 2.6MHz
电流 - 输出: 600mA
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: 8-WFDFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 8-DFN-EP(3x3)
LTC3409
TYPICAL PERFORMANCE CHARACTERISTICS
(From Typical Application on the front page except for the resistive divider resistor values)
2.70
Oscillator Frequency
vs Temperature
6
Oscillator Frequency Shift
vs Input Voltage
1.22
Output Voltage vs Load Current
V IN = 1.6V
2.60
2.50
V IN = 2.7V
4
f LOW
2.40
2.30
2.20
2.10
2.00
1.90
1.80
1.70
V IN = 4.2V
V IN = 4.2V
V IN = 1.6V
OSC 2.6MHz
OSC 1.7MHz
2
0
–2
–4
1.7MHz
f HIGH
2.6MHz
1.21
1.20
1.2V OUT
BURST
1.2V OUT
PULSE
SKIP
1.60
1.50
1.40
V IN = 1.6V
V IN = 2.7V
–6
–8
1.19
1.30
1.20
–50
–25
0
25
50
75
100
125
–10
1.5
2.5
3.5
4.5
5.5
1.18
0 100 200 300 400 500 600 700 800 900
TEMPERATURE (°C)
R DS(ON) vs Input Voltage
3409 G07
INPUT VOLTAGE (V)
R DS(ON) vs Input Temperature
3409 G08
LOAD CURRENT (mA)
Dynamic Input Current
vs Input Voltage
3409 G09
0.450
0.55
6000
80
V FB = 0
0.400
0.350
0.300
0.250
0.200
0.150
0.100
0.050
MAIN
SWITCH
SYNCHRONOUS
SWITCH
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.15
MAIN SWITCH
1.6V
4.2V
2.7V
2.7V
4.2V
1.6V
5000
4000
3000
2000
1000
B URST/SLEE                  P
V OUT = 1.5V
I OUT = 0
V FB = V IN
V OUT = 1.5V
I OUT = 0
PULSE
SKIP
70
60
50
40
30
20
10
SYNCHRONOUS SWITCH
0
1.5
2.5
3.5
4.5
5.5
0.10
–50 –25
0
25
50
75
100
125
0
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
0
INPUT VOLTAGE (V)
Dynamic Supply Current vs
Temperature, V IN = 3.6V,
V OUT = 1.5V, 0 Load
3409 G10
TEMPERATURE (°C)
3409 G11
Switch Leakage vs Temperature
V IN = 5.5V
INPUT VOLTAGE (V)
3409 G12
Switch Leakage vs Input Voltage
500
450
6000
V IN = 5.5   V
45
40
400
350
PULSE SKIP
5000
4000
35
30
300
250
200
150
3000
2000
MAIN SWITCH
25
20
15
MAIN SWITCH
100
50
BURST
1000
S YNCHRONOUS           SWITC          H
10
5
SYNCHRONOUS
SWITCH
0
–50
–25
0
25
50
75
100
125
0
–50 –25
0
25
50
75
100
125
0
0
2
4
6
8
TEMPERATURE (°C)
3409 G13
TEMPERATURE (°C)
3409 G14
INPUT VOLTAGE (V)
3409 G15
3409fc
5
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