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参数资料
| 型号： | LTC3862IUH#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/42页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BST PWM CM 24-QFN |
| 标准包装： | 2,500 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 500kHz |
| 占空比： | 96% |
| 电源电压： | 4 V ~ 36 V |
| 降压： | 无 |
| 升压： | 是 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 24-WQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
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LTC3862
Multi-Phase Current Mode
Step-Up DC/DC Controller
FEATURES
DESCRIPTION
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Wide V IN Range: 4V to 36V Operation
2-Phase Operation Reduces Input and Output
Capacitance
Fixed Frequency, Peak Current Mode Control
5V Gate Drive for Logic-Level MOSFETs
Adjustable Slope Compensation Gain
Adjustable Max Duty Cycle (Up to 96%)
Adjustable Leading Edge Blanking
±1% Internal Voltage Reference
Programmable Operating Frequency with One
External Resistor (75kHz to 500kHz)
Phase-Lockable Fixed Frequency 50kHz to 650kHz
SYNC Input and CLKOUT for 2-, 3-, 4-, 6- or
12-Phase Operation (PHASEMODE Programmable)
Internal 5V LDO Regulator
24-Lead Narrow SSOP Package
5mm × 5mm QFN with 0.65mm Lead Pitch and
24-Lead Thermally Enhanced TSSOP Packages
The LTC ? 3862 is a two phase constant frequency, current
mode boost and SEPIC controller that drives N-channel
power MOSFETs. Two phase operation reduces system
filtering capacitance and inductance requirements.
The operating frequency can be set with an external resistor
over a 75kHz to 500kHz range and can be synchronized
to an external clock using the internal PLL. Multi-phase
operation is possible using the SYNC input, the CLKOUT
output and the PHASEMODE control pin allowing 2-, 3-,
4-, 6- or 12-phase operation.
Other features include an internal 5V LDO with undervoltage
lockout protection for the gate drivers, a precision RUN
pin threshold with programmable hysteresis, soft-start
and programmable leading edge blanking and maximum
duty cycle.
PART NUMBER INTV CC V IN ON V IN OFF
LTC3862 5V 3.3V 2.9V
APPLICATIONS
LTC3862-1
LTC3862-2
10V
10V
7.5V
4.4V
7.0V
3.9V
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Automotive, Telecom and Industrial Power Supplies
L , LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Protected by U.S. Patents, including 6144194, 6498466, 6611131.
TYPICAL APPLICATION
84.5k
19.4μH
19.4μH
22μF
50V
V IN
5V TO 36V
10k
GATE2
SENSE2 +
SENSE2 –
PGND
V IN = 12V
475k
12.4k
24.9k
4.7μF
66.5k
10nF
10nF
1nF
10nF
68.1k 100pF
V IN
RUN GATE1
INTV CC SENSE1 +
LTC3862
BLANK SENSE1 –
FREQ
SYNC
PLLFLTR
SS
3V8
CLKOUT
FB SLOPE
D MAX
ITH PHASEMODE
SGND
0.006
220μF
50V
0.006
V OUT
48V
5A (MAX)
Efficiency vs Output Current
98
V OUT = 48V
96
94
92
90
V IN = 24V
88
V IN = 5V
86
84
82
80
100 1000
LOAD CURRENT (mA)
10000
3862 TA01b
3862 TA01
3862fc
For more information www.linear.com/LTC3862
1
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相关代理商/技术参数 |
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| LTC3863EDE#PBF | 制造商:Linear Technology 功能描述:IC REG CTRLR BUCK PWM 12DFN 制造商:Linear Technology 功能描述:INV DC/DC 60V 850KHZ -150V 12DFN 制造商:Linear Technology 功能描述:INV DC/DC, 60V, 850KHZ, -150V, 12DFN 制造商:Linear Technology 功能描述:DC-DC CONVERTER, BUCK, ADJ, 810KHZ, DFN-12, Primary Input Voltage:60V, No. of Outputs:1, No. of Pins:12, Operating Temperature Min:-40C, Operating Temperature Max:125C, MSL:MSL 1 - Unlimited, Package / Case:12-DFN , RoHS Compliant: Yes |
| LTC3863EDE#TRPBF | 制造商:Linear Technology 功能描述:IC REG CTRLR BUCK PWM 12DFN 制造商:Linear Technology 功能描述:DC-DC CONVERTER, BUCK, ADJ, 810KHZ, DFN-12, Primary Input Voltage:60V, No. of Outputs:1, No. of Pins:12, Operating Temperature Min:-40C, Operating Temperature Max:125C, MSL:MSL 1 - Unlimited, Package / Case:12-DFN , RoHS Compliant: Yes |
| LTC3863EMSE#PBF | 制造商:Linear Technology 功能描述:IC REG CTRLR BUCK PWM 12MSOP 制造商:Linear Technology 功能描述:INV DC/DC 60V 850KHZ -150V 12MSOP 制造商:Linear Technology 功能描述:INV DC/DC, 60V, 850KHZ, -150V, 12MSOP 制造商:Linear Technology 功能描述:DP-SWREG/Controller, 60V Low IQ Inverting Buck-Boost DC/DC PMOS Controller 制造商:Linear Technology 功能描述:DC-DC CONVERTER, BUCK, ADJ, 810KHZ, MSOP-12, Primary Input Voltage:60V, No. of Outputs:1, No. of Pins:12, Operating Temperature Min:-40C, Operating Temperature Max:125C, MSL:MSL 1 - Unlimited, Package / Case:12-MSOP , RoHS Compliant: Yes |
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| LTC3863HDE#PBF | 制造商:Linear Technology 功能描述:IC REG CTRLR BUCK PWM 12DFN 制造商:Linear Technology 功能描述:INV DC/DC 60V 850KHZ -150V 12DFN 制造商:Linear Technology 功能描述:INV DC/DC, 60V, 850KHZ, -150V, 12DFN 制造商:Linear Technology 功能描述:DC-DC CONVERTER, BUCK, ADJ, 810KHZ, DFN-12, Primary Input Voltage:60V, No. of Outputs:1, No. of Pins:12, Operating Temperature Min:-40C, Operating Temperature Max:150C, MSL:MSL 1 - Unlimited, Package / Case:12-DFN , RoHS Compliant: Yes |
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