参数资料
型号: LT3804EFE#TRPBF
厂商: Linear Technology
文件页数: 4/16页
文件大小: 0K
描述: IC REG CTRLR ISO PWM 28-TSSOP
标准包装: 2,000
PWM 型: 电流/电压模式
输出数: 2
频率 - 最大: 570kHz
占空比: 80%
电源电压: 8 V ~ 25 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 125°C
封装/外壳: 28-SOIC(0.173",4.40mm 宽)裸露焊盘
包装: 带卷 (TR)
LT3804
TYPICAL PERFOR A CE CHARACTERISTICS
V GBIAS vs I GBIAS Over Junction
Temperature
I CC vs V CC (Switching Off)
Voltage Amplifier V A1 , V A2 Gain
and Phase
8.1
–40 ° C
13
T A = 25 ° C
120
T A = 25 ° C
–0
12
8.0
25 ° C
11
80
GAIN
(–111 ° )
–50
10
PHASE
7.9
9
40
–100
8
7.8
7
125 ° C
6
0
0dB, 10MHz
–150
7.7
0
10
20
26
5
8
10
12
14
16 18
20
22
24
–20
10
100
1k
10k 100k
1M
–180
10M 100M
I GBIAS (mA)
? V REF vs V CC , ? FREQ vs V CC
3804 G01
V CC (V)
3804 G02
CSET vs Switching Frequency
FREQUENCY (Hz)
V REF vs Temperature
3804 G03
3
CSET = 500pF
T A = 25 ° C
800
T A = 25 ° C
CSET
1.00
0.602
0.601
2
0.95
1
? V REF
600
MAXIMUM DUTY CYCLE
0.90
0.600
0
0.85
0.599
–1
? FREQ
1
400
0.80
0.598
0
0.75
–1
200
0.70
0.587
10
15
20
25
100 200 300 400 500 600 700 800 900 1000
0.596
–40 –20 0
25
50
75
100
125
V CC (V)
Switching Frequency vs
Temperature
3804 G04
CSET (pF)
3804 G05
G BIAS vs I GBIAS (Charging 2.2 μ F)
8
JUNCTION TEMPERATURE ( ° C)
3804 G06
Current Limit Amplifier CA1 Gain
at V CC = 11V, V CL2N = 5V
215
210
CSET = 500pF
300
250
200
C GBIAS = 2.2 μ F
T A = 25 ° C
V GBIAS
12
10
8
7
6
5
V CC = 11V
V CL2N = 5V
T A = 25 ° C
205
150
6
4
CSET PEAK
200
100
50
I GBIAS
4
2
3
2
195
0
0
1
CSET VALLEY
–40 –20 0
25
50
75
100
125
0
500 μ s
1ms
0
30
40
50 60
70
JUNCTION TEMPERATURE ( ° C)
3804 G07
TIME
3804 G08
V CL2P – V CL2N (mV)
3804 G09
3804i
4
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