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| 型号： | LTC3862IGN#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 4/42页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BST PWM CM 24-SSOP |
| 标准包装： | 55 |
| 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-SSOP（0.154"，3.90mm 宽） |
| 包装： | 管件 |
| 产品目录页面： | 1336 (CN2011-ZH PDF) |
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LTC3862
ELECTRICAL CHARACTERISTICS (Notes 2, 3) The l denotes the specifications which apply over the specified
operating junction temperature range, otherwise specifications are at T A = 25°C. V IN = 12V, RUN = 2V and SS = open, unless
otherwise noted.
SYMBOL
f SYNC
V SYNC
I PLLFLTR
PARAMETER
SYNC Minimum Input Frequency
SYNC Maximum Input Frequency
SYNC Input Threshold
Phase Detector Sourcing Output Current
CONDITIONS
V SYNC = External Clock
V SYNC = External Clock
Rising Threshold
f SYNC > f OSC
l
l
MIN
650
TYP
1.5
–15
MAX
50
UNITS
kHz
kHz
V
μA
Phase Detector Sinking Output Current
f SYNC < f OSC
15
μA
CH1-CH2
CH1-CLKOUT
D MAX
t ON(MIN)1
t ON(MIN)2
t ON(MIN)3
Channel 1 to Channel 2 Phase Relationship
Channel 1 to CLKOUT Phase Relationship
Maximum Duty Cycle
Minimum On-Time
Minimum On-Time
Minimum On-Time
V PHASEMODE = 0V
V PHASEMODE = Float
V PHASEMODE = 3V8
V PHASEMODE = 0V
V PHASEMODE = Float
V PHASEMODE = 3V8
V DMAX = 0V (Note 9)
V DMAX = Float
V DMAX = 3V8
V BLANK = 0V (Note 8)
V BLANK = Float (Note 8)
V BLANK = 3V8 (Note 8)
180
180
120
90
60
240
96
84
75
180
260
340
Deg
Deg
Deg
Deg
Deg
Deg
%
%
%
ns
ns
ns
Gate Driver
R DS(ON)
Driver Pull-Up R DS(ON)
Driver Pull-Down R DS(ON)
2.1
0.7
Ω
Ω
Overvoltage
V FB(OV)
V FB , Overvoltage Lockout Threshold
V FB(OV) – V FB(NOM) in Percent
8
10
12
%
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 device pins are positive; all currents out of device
pins are negative. All voltages are referenced to ground unless otherwise
specified.
Note 3: The LTC3862E is guaranteed to meet performance specifications
from 0°C to 85°C. Specifications over the –40°C to 85°C operating
junction temperature range are assured by design, characterization and
correlation with statistical process controls. The LTC3862I is guaranteed
over the full –40°C to 125°C operating junction temperature range and
the LTC3862H is guaranteed over the full –40°C to 150°C operating
junction temperature range. High junction temperatures degrade operating
lifetimes. Operating lifetime is derated at junction temperatures greater
than 125°C.
Note 4: This IC includes overtemperature protection that is intended to
protect the device during momentary overload conditions. Continuous
operation above the specified maximum operating junction temperature
may impair device reliability.
Note 5: Supply current in normal operation is dominated by the current
needed to charge the external MOSFET gates. This current will vary with
supply voltage and the external MOSFETs used.
Note 6: The IC is tested in a feedback loop that adjusts V FB to achieve a
specified error amplifier output voltage.
Note 7: Guaranteed by design, not subject to test.
Note 8: The minimum on-time condition is specified for an inductor peak-
to-peak ripple current = 30% (see Minimum On-Time Considerations in the
Applications Information section).
Note 9: The maximum duty cycle limit is derived from an internal
clock that runs at 12x the programmed switching frequency. See the
Applications Information for additional information.
3862fc
4
For more information www.linear.com/LTC3862
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相关代理商/技术参数 |
参数描述 |
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| LTC3862IUH#PBF | 功能描述:IC REG CTRLR BST PWM CM 24-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,000 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:1MHz 占空比:50% 电源电压:9 V ~ 10 V 降压:无 升压:是 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 85°C 封装/外壳:8-TSSOP（0.173"，4.40mm 宽） 包装:带卷 (TR) |
| LTC3862IUH#TRPBF | 功能描述:IC REG CTRLR BST PWM CM 24-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- 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) |
| LTC3862IUH-1#PBF | 功能描述:IC REG CTRLR BST PWM CM 24-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- 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) |
| LTC3862IUH-1#TRPBF | 功能描述:IC REG CTRLR BST PWM CM 24-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 V 降压:是 升压:无 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:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX |
| LTC3862IUH-2#PBF | 功能描述:IC REG CTRLR BST PWM CM 24-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- 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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