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参数资料
| 型号： | LTC3778EF#TR |
| 厂商： | Linear Technology |
| 文件页数： | 3/24页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 20TSSOP |
| 标准包装： | 2,500 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 电源电压： | 4 V ~ 36 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 ~ 85°C |
| 封装/外壳： | 20-TSSOP（0.173"，4.40mm 宽） |
| 包装： | 带卷 (TR) |
| 其它名称： | LTC3778EFTR |
LTC3778
ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are T A = 25 ° C. V IN = 15V unless otherwise noted.
SYMBOL
V RUN/SS(ON)
PARAMETER
RUN Pin Start Threshold
CONDITIONS
q
MIN
0.8
TYP
1.5
MAX
2
UNITS
V
V RUN/SS(LE)
V RUN/SS(LT)
I RUN/SS(C)
I RUN/SS(D)
RUN Pin Latchoff Enable Threshold
RUN Pin Latchoff Threshold
Soft-Start Charge Current
Soft-Start Discharge Current
RUN/SS Pin Rising
RUN/SS Pin Falling
– 0.5
0.8
4
3.5
– 1.2
1.8
4.5
4.2
–3
3
V
V
μ A
μ A
V IN(UVLO)
V IN(UVLOR)
TG R UP
TG R DOWN
BG R UP
BG R DOWN
TG t r
TG t f
BG t r
BG t f
Undervoltage Lockout Threshold
Undervoltage Lockout Threshold
TG Driver Pull-Up On Resistance
TG Driver Pull-Down On Resistance
BG Driver Pull-Up On Resistance
BG Driver Pull-Down On Resistance
TG Rise Time
TG Fall Time
BG Rise Time
BG Fall Time
V IN Falling
V IN Rising
TG High
TG Low
BG High
BG Low
C LOAD = 3300pF
C LOAD = 3300pF
C LOAD = 3300pF
C LOAD = 3300pF
q
q
3.4
3.5
2
2
3
1
20
20
20
20
3.9
4
3
3
4
2
V
V
?
?
?
?
ns
ns
ns
ns
Internal V CC Regulator
V INTVCC
? V LDO(LOADREG)
V EXTVCC
? V EXTVCC
Internal V CC Voltage
Internal V CC Load Regulation
EXTV CC Switchover Voltage
EXTV CC Switch Drop Voltage
6V < V IN < 30V, V EXTVCC = 4V
I CC = 0mA to 20mA, V EXTVCC = 4V
I CC = 20mA, V EXTVCC Rising
I CC = 20mA, V EXTVCC = 5V
q
q
4.7
4.5
5
– 0.1
4.7
150
5.3
± 2
300
V
%
V
mV
? V EXTVCC(HYS)
EXTV CC Switchover Hysteresis
200
mV
PGOOD Output
? V FBH
? V FBL
? V FB(HYS)
V PGL
PGOOD Upper Threshold
PGOOD Lower Threshold
PGOOD Hysteresis
PGOOD Low Voltage
V FB Rising
V FB Falling
V FB Returning
I PGOOD = 5mA
7.5
– 7.5
10
– 10
1
0.15
12.5
– 12.5
2.5
0.4
%
%
%
V
Note 1: Absolute Maximum Ratings are those values beyond which the life of
a device may be impaired.
Note 2: T J is calculated from the ambient temperature T A and power
dissipation P D as follows:
LTC3778E: T J = T A + (P D ? 110 ° C/W)
Note 3: The LTC3778 is tested in a feedback loop that adjusts V FB to achieve
a specified error amplifier output voltage (I TH ).
Note 4: The LTC3778E is guaranteed to meet performance specifications from
0 ° C to 70 ° C. Specifications over the –40 ° C to 85 ° C operating temperature
range are assured by design, characterization and correlation with statistical
process controls.
3778f
3
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3780EG | 制造商:Linear Technology 功能描述:DC DC Cntrlr Dual-OUT Synchronous Boost/Buck Controller 4V to 36V Input 24-Pin SSOP |
| LTC3780EG#PBF | 功能描述:IC REG CTRLR BST PWM CM 24-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 特色产品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 标准包装:1 系列:PowerWise® PWM 型:电压模式 输出数:1 频率 - 最大:1MHz 占空比:81% 电源电压:4.5 V ~ 18 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:-5°C ~ 125°C 封装/外壳:32-WFQFN 裸露焊盘 包装:Digi-Reel® 产品目录页面:1303 (CN2011-ZH PDF) 其它名称:LM3754SQDKR |
| LTC3780EG#TR | 制造商:Linear Technology 功能描述:DC DC Cntrlr Dual-OUT Synchronous Boost/Buck Controller 4V to 36V Input 24-Pin SSOP T/R |
| LTC3780EG#TRPBF | 功能描述:IC REG CTRLR BST PWM CM 24-SSOP 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 |
| LTC3780EGPBF | 制造商:Linear Technology 功能描述:4-Switch Buck-Boost Controller SSOP24 |
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