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參數(shù)資料
| 型號(hào)： | LT3587EUD#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PQCC20 |
| 封裝： | 3 X 3 MM, LEAD FREE, PLASTIC, QFN-20 |
| 文件頁數(shù)： | 18/24頁 |
| 文件大小： | 395K |
| 代理商： | LT3587EUD#TRPBF |
LT3587
3
3587fc
ELECTRICAL CHARACTERISTICS The l denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. VVIN = 3.6V, VEN/SS1 = VEN/SS3 = VVIN unless otherwise noted (Note 2, 3).
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Boost1
CAP1 Bias Current
VCAP1 = 15V, VOUT1 = Open
60
150
μA
FB1 Reference Voltage
l
1.19
1.22
1.25
V
VOUT1 Output Voltage
RFB1 = 1MΩ
l
14.25
15
15.75
V
SW1 Current Limit
800
990
mA
SW1 VCESAT
ISW1 = 400mA
200
mV
SW1 Leakage Current
VSW1 = 15V
0.1
5
μA
EN/SS1 for Full Inductor Current
VFB1 = 1.1V, VFB2 = 0.1V
2.5
V
EN/SS1 Shutdown Voltage Threshold
l
0.2
V
EN/SS1 Pin Bias Current
VEN/SS1 = 0V
–0.5
–1
–1.5
μA
VOUT1 Current Limit
VCAP1 = 15V
100
155
mA
CAP1 to VOUT1 On-Resistance (RDISC1)VCAP1 = 15V, IVOUT1= 50mA
5
8
Ω
VOUT1 Disconnect Leakage
VVIN = VCAP1 = 6V, VVOUT1 = 0V
0.1
1
μA
Inverter
FB2 Reference Voltage
l
–10
5
20
mV
Output Voltage
RFB2 = 1MΩ
l
–7.5
–8
–8.5
V
SW2 Current Limit
900
1090
mA
SW2 VCESAT
ISW2 = 600mA
250
mV
SW2 Leakage Current
VSW2 = 15V
0.1
5
μA
FB1 Threshold to Start Negative Channel
Percent of Final Regulation Value
87
90
%
Boost3
CAP3 Bias Current
VCAP3 = 15V, VOUT3 = Open
70
150
μA
Boost3 Programmed Current
RIFB3 = 8.06kΩ
l
18
20
22
mA
VFB3 Reference Voltage
RVFB3 = 1MΩ, IVOUT3 = 20mA
l
0.77
0.8
0.83
V
VOUT3 Output Voltage
RVFB3 = 1MΩ, IVOUT3 = 20mA
l
14
15
16
V
SW3 Current Limit
400
480
mA
SW3 VCESAT
ISW3 = 200mA
250
mV
SW3 Leakage Current
VSW3 = 15V
0.1
5
μA
EN/SS3 for Full Inductor Current
VVFB3 = VIFB3 = 0.6V
2
V
EN/SS3 Shutdown Voltage Threshold
l
0.2
V
EN/SS3 Pin Bias Current
VEN/SS3 = 0V
–0.5
–1
–1.5
μA
VOUT3 Current Limit
VCAP3 = 15V, VIFB3 = 0V
70
110
mA
CAP3 to VOUT3 On Resistance (RDISC3)VCAP3 = 15V, IVOUT3 = 20mA
10
15
Ω
VOUT3 Disconnect Leakage
VVIN = VCAP3 = 6V, VVOUT3 = 0V
0.1
1
μA
CAP3 Pin Overvoltage Clamp
27
29
31
V
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: All currents into pins are positive; all voltages are referenced to
GND unless otherwise noted.
Note 3: The LT3587 is guaranteed to meet specied performance from
0°C to 125°C. Specications over the –40°C to 125°C operating range are
assured by design, characterization and correlation with statistical process
controls.
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