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参数资料
| 型号： | LTC3736EGN |
| 厂商： | Linear Technology |
| 文件页数： | 6/28页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 24-SSOP |
| 标准包装： | 55 |
| 系列： | PolyPhase® |
| PWM 型： | 电流模式 |
| 输出数： | 2 |
| 频率 - 最大： | 825kHz |
| 占空比： | 100% |
| 电源电压： | 2.75 V ~ 9.8 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： | 24-SSOP（0.154"，3.90mm 宽） |
| 包装： | 管件 |
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LTC3736
TYPICAL PERFOR A CE CHARACTERISTICS
T A = 25 ° C unless otherwise noted.
Shutdown Quiescent Current
vs Input Voltage
RUN/SS Start-Up Current
vs Input Voltage
20
18
16
14
RUN/SS = 0V
0.9
0.8
0.7
0.6
RUN/SS = 0V
12
10
8
6
4
2
0.5
0.4
0.3
0.2
0.1
0
2
3
4
5
6
7
8
9
10
0
2
3
4
5
6
7
8
9
10
INPUT VOLTAGE (V)
3736 G17
INPUT VOLTAGE (V)
3736 G18
PI FU CTIO S
(UF/GN Package)
I TH1 /I TH2 (Pins 1, 8/ Pins 4, 11): Current Threshold and
Error Amplifier Compensation Point. Nominal operating
range on these pins is from 0.7V to 2V. The voltage on
these pins determines the threshold of the main current
comparator.
PLLLPF (Pin 3/Pin 6): Frequency Set/PLL Lowpass Filter.
When synchronizing to an external clock, this pin serves
as the lowpass filter point for the phase-locked loop. Nor-
mally a series RC is connected between this pin and ground.
When not synchronizing to an external clock, this pin serves
as the frequency select input. Tying this pin to GND selects
300kHz operation; tying this pin to V IN selects 750kHz op-
eration. Floating this pin selects 550kHz operation.
SGND (Pin 4/Pin 7): Small-Signal Ground. This pin serves
as the ground connection for most internal circuits.
V IN (Pin 5/Pin 8): Chip Signal Power Supply. This pin
powers the entire chip except for the gate drivers. Externally
filtering this pin with a lowpass RC network (e.g.,
R = 10 ? , C = 1 μ F) is suggested to minimize noise pickup,
especially in high load current applications.
TRACK (Pin 6/Pin 9): Tracking Input for Second Control-
ler. Allows the start-up of V OUT2 to “track” that of V OUT1
according to a ratio established by a resistor divider on
V OUT1 connected to the TRACK pin. For one-to-one track-
ing of V OUT1 and V OUT2 during start-up, a resistor divider
with values equal to those connected to V FB2 from V OUT2
should be used to connect to TRACK from V OUT1 .
PGOOD(Pin 9/Pin 12): Power Good Output Voltage Moni-
tor Open-Drain Logic Output. This pin is pulled to ground
when the voltage on either feedback pin (V FB1 , V FB2 ) is not
within ± 13.3% of its nominal set point.
PGND (Pins 12, 16, 20, 25/ Pins 15, 19, 23): Power
Ground. These pins serve as the ground connection for the
gate drivers and the negative input to the reverse current
comparators. The Exposed Pad (UF package) must be
soldered to PCB ground.
RUN/SS (Pin 14/Pin 17): Run Control Input and Optional
External Soft-Start Input. Forcing this pin below 0.65V shuts
down the chip (both channels). Driving this pin to V IN or
releasing this pin enables the chip, using the chip’s inter-
nal soft-start. An external soft-start can be programmed by
connecting a capacitor between this pin and ground.
TG1/TG2 (Pins 17, 15/Pins 20, 18): Top (PMOS) Gate Drive
Output. These pins drive the gates of the external P-channel
MOSFETs. These pins have an output swing from PGND to
SENSE + .
SYNC/FCB (Pin 18/Pin 21): This pin performs three
functions: 1) auxiliary winding feedback input, 2) external
clock synchronization input for phase-locked loop, and 3)
Burst Mode operation or forced continuous mode select.
3736fa
6
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3736EGN#PBF | 功能描述:IC REG CTRLR BUCK 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:PolyPhase® 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 |
| LTC3736EGN#TR | 功能描述:IC REG CTRLR BUCK PWM CM 24-SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:PolyPhase® 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) |
| LTC3736EGN#TRPBF | 功能描述:IC REG CTRLR BUCK 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:PolyPhase® 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) |
| LTC3736EGN-1 | 功能描述:IC REG CTRLR BUCK PWM CM 24-SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:PolyPhase® 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 |
| LTC3736EGN-1#PBF | 功能描述:IC REG CTRLR BUCK 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:PolyPhase® 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 |
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