参数资料
型号: LT3587EUD#TRPBF
厂商: LINEAR TECHNOLOGY CORP
元件分类: 稳压器
英文描述: SWITCHING REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PQCC20
封装: 3 X 3 MM, LEAD FREE, PLASTIC, QFN-20
文件页数: 19/24页
文件大小: 395K
代理商: LT3587EUD#TRPBF
LT3587
4
3587fc
TYPICAL PERFORMANCE CHARACTERISTICS
Shutdown Quiescent Current
vs Input Supply Voltage
Quiescent Current
When On But Not Switching
vs Input Supply Voltage
VIN UVLO Voltage vs Temperature
FB1, VFB3 and IFB3 Regulation
Voltage vs Temperature
FB2 Regulation Voltage
vs Temperature
FB1, VFB3, IFB3 Bias Current in
Regulation vs Temperature
Specications are at TA = 25°C unless otherwise noted.
FB2 Bias Current in Regulation
vs Temperature
INPUT VOLTAGE (V)
2.5
QUIESCENT
CURRENT
(μA)
10
8
6
4
2
4
3.5
5
3587 G01
6
5.5
3
4.5
125°C
90°C
25°C
–40°C
VVIN = 3.6V
EN/SS1 = EN/SS3 = 0V
INPUT VOLTAGE (V)
2.5
QUIESCENT
CURRENT
(mA)
3.5
3.0
2.5
2.0
1.5
4
3.5
5
3587 G02
6
5.5
3
4.5
125°C
90°C
25°C
–40°C
VVIN = EN/SS1 = EN/SS3 = 3.6V
FB1 = VFB3 = 1.5V
FB2 = IFB3 = 0V
TEMPERATURE (°C)
–50
UVLO
VOL
TAGE
(V)
2.20
2.15
2.10
2.05
2.00
25
075
3587 G03
125
100
–25
50
TEMPERATURE (°C)
–50
REGULA
TION
VOL
TAGE
(V)
V
IFB3
,V
VFB3
REGULA
TION
VOL
TAGE
(V)
1.240
1.230
1.220
1.210
1.200
0.825
0.813
0.800
0.788
0.775
25
075
3587 G04
125
100
–25
50
VFB3
VIFB3
FB1
VVIN = 3.6V
RFB1 = RVFB3 = 1MΩ
RIFB3 = 8.06kΩ
IVOUT1 = 50mA
IVOUT3 = 20mA
TEMPERATURE (°C)
–50
FB2
REGULA
TION
VOL
TAGE
(mV)
15
10
5
0
–5
–10
25
075
3587 G05
125
100
–25
50
VVIN = 3.6V
RFB2 = 1MΩ
IVNEG = 100mA
TEMPERATURE (°C)
–50
BIAS
CURRENT
(μA)
IFB3
BIAS
CURRENT
(μA)
14.50
14.25
14.00
13.50
13.75
13.25
13.00
106
104
102
98
100
96
94
25
075
3587 G06
125
100
–25
50
VVIN = 3.6V
RFB1 = RVFB3 =1MΩ
RIFB3 =8.06kΩ
IVOUT1 = 50mA
IVOUT3 = 20mA
IVFB3
IFB1
IIFB3
TEMPERATURE (°C)
–50
FB2
BIAS
CURRENT
(μA)
–7.75
–7.85
–7.95
–8.15
–8.05
–8.25
25
075
3587 G07
125
100
–25
50
VVIN = 3.6V
RFB2 =1MΩ
IVNEG = 100mA
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