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参数资料
| 型号： | LTC3866EFE#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 5/36页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 24TSSOP |
| 标准包装： | 2,500 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 850kHz |
| 占空比： | 95% |
| 电源电压： | 4.5 V ~ 38 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： | 24-TSSOP（0.173"，4.40mm）裸露焊盘 |
| 包装： | 带卷 (TR) |
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LTC3866
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the specified operating
junction temperature range, otherwise s pecifications are at T A = 25°C (Note 2). V IN = 15V , V RUN = 5V unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
On-Chip Driver
TG R UP
TG R DOWN
BG R UP
BG R DOWN
TG Pull-Up R DS(ON)
TG Pull-Down R DS(ON)
BG Pull-Up R DS(ON)
BG Pull-Down R DS(ON)
TG High
TG Low
BG High
BG Low
2.6
1.5
2.4
1.1
Ω
Ω
Ω
Ω
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: The LTC3866 is tested under pulsed load conditions such that
T J ≈ T A . The LTC3866E is guaranteed to meet performance specifications
from 0°C to 85°C operating junction temperature. Specifications over
the –40°C to 125°C operating junction temperature range are assured by
design, characterization and correlation with statistical process controls.
The LTC3866I is guaranteed to meet performance specifications over the
full –40°C to 125°C operating junction temperature range. The maximum
ambient temperature consistent with these specifications is determined
by specific operating conditions in conjunction with board layout, the
package thermal impedance and other environmental factors.
Note 3: The junction temperature, T J , is calculated from the ambient
temperature, T A , and power dissipation, P D , according to the following
formula:
LTC3866FE: T J = T A + (P D ? 33° C/W)
LTC3866UF: T J = T A + (P D ? 47° C/W)
Note 4: This IC includes overtemperature protection that is intended to
protect the device during momentary overload conditions. The maximum
rated junction temperature will be exceeded when this protection is active.
Continuous operation above the absolute maximum operating junction
temperature may impair device reliability or permanently damage the
device.
Note 5: The LTC3866 is tested in a feedback loop that servos V ITH to a
specified voltage and measures the resultant V FB .
Note 6: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency. See Applications Information.
Note 7: Rise and fall times are measured using 10% and 90% levels. Delay
times are measured using 50% levels.
Note 8: The minimum on-time condition corresponds to the on inductor
peak-to-peak ripple current ≥40% of I MAX (see Minimum On-Time
Considerations in the Applications Information section).
Note 9: Guaranteed by design.
TYPICAL PERFORMANCE CHARACTERISTICS
T A = 25°C, unless otherwise noted.
Efficiency vs Load Current
and Mode
Efficiency vs Load Current
and Mode
Efficiency and Power Loss
vs Load Current
100
90
80
70
60
50
40
30
20
10
0
0.01
0.1
V IN = 4.5V
V OUT = 1.5V
L = 0.33μH
(DCR = 0.32m TYP)
FRONT PAGE CIRCUIT
CCM
PULSE SKIPPING
Burst Mode
OPERATION
1 10 100
100
90
80
70
60
50
40
30
20
10
0
0.01
0.1
V IN = 12V
V OUT = 1.5V
L = 0.33μH
(DCR = 0.32m TYP)
FRONT PAGE CIRCUIT
CCM
PULSE SKIPPING
Burst Mode
OPERATION
1 10 100
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
0
V IN = 20V
V OUT = 1.5V
FRONT PAGE CIRCUIT
EFFICIENCY
POWER LOSS
5 10 15 20 25
30
35
15
10
5
0
LOAD CURRENT (A)
3866 G01
LOAD CURRENT (A)
3866 G02
LOAD CURRENT (A)
3866 G03
3866fb
5
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相关代理商/技术参数 |
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| LTC3866EUF#PBF | 功能描述:IC REG CTRLR BUCK 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) |
| LTC3866EUF#TRPBF | 功能描述:IC REG CTRLR BUCK 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) |
| LTC3866IFE#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 24TSSOP 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) |
| LTC3866IFE#PBF | 制造商:Linear Technology 功能描述:BUCK REGULATOR CURRENT MODE SYNC TSSOP |
| LTC3866IFE#TRPBF | 功能描述:IC REG CTRLR BUCK PWM CM 24TSSOP 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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