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参数资料
| 型号： | LT3464ETS8#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 6/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST ADJ 115MA TSOT23-8 |
| 标准包装： | 2,500 |
| 类型： | 升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.25 V ~ 34 V |
| 输入电压： | 2.3 V ~ 10 V |
| PWM 型： | Burst Mode? |
| 电流 - 输出： | 115mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-8 薄型，TSOT-23-8 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | TSOT-23-8 |
LT3464
BLOCK DIAGRA
V IN
7
C PL
DELAY
SW
6
CAP
5
OUT
3
FB
2
S
R
Q
Q
+
CTRL
1
–
–
OUT
+
ANTI
SAT
OPERATIO
SHDN 8
1.25V
V REF
OUT
–
12MV
0.1 ?
4
GND
3464 BD
THE LT3464 USES A CONSTANT OFF-TIME CONTROL SCHEME IN
CONJUNCTION WITH BURST MODE ? OPERATION TO PROVIDE HIGH
EFFICIENCY OVER A WIDE RANGE OF OUTPUT CURRENT. OPERATION
CAN BEST BE UNDERSTOOD BY STUDYING THE BLOCK DIAGRAM.
WHEN THE FB PIN VOLTAGE IS LOWER THAN THE 1.25V REFERENCE,
THE HYSTERETIC COMPARATOR ENABLES THE POWER SECTION,
CAUSING THE CHIP TO START SWITCHING, THUS CHARGING THE
OUTPUT CAPACITOR. WHEN THE OUTPUT VOLTAGE INCREASES
ENOUGH TO OVERCOME THE HYSTERESIS, THE FEEDBACK COM-
PARATOR SHUTS OFF THE POWER SECTION LEAVING ONLY LOW POWER
CIRCUITRY RUNNING UNTIL THE OUTPUT VOLTAGE FALLS AGAIN. THIS
CYCLE REPEATS, KEEPING THE OUTPUT VOLTAGE WITHIN A SMALL
WINDOW. THE SWITCHING ACTION IS AS FOLLOWS: THE SWITCH
TURNS ON, AND CURRENT THROUGH IT STARTS TO RAMP UP UNTIL THE
POINT WHERE THE CURRENT LIMIT IS REACHED, AT WHICH POINT THE
SWITCH TURNS OFF FOR A FIXED AMOUNT OF TIME. WHILE THE
SWITCH IS OFF THE INDUCTOR IS DELIVERING CURRENT TO THE LOAD.
WHEN THE OFF TIME EXPIRES, THE SWITCH TURNS ON AGAIN UNTIL
THE CURRENT LIMIT IS REACHED, AND THE CYCLE REPEATS.
THIS CHIP INCLUDES AN INTERNAL POWER SCHOTTKY DIODE AND A
PNP TRANSISTOR FOR OUTPUT DISCONNECT. THE PNP TRANSISTOR
DISCONNECTS THE LOAD FROM THE INPUT DURING SHUTDOWN. THE
PNP CONTROL CIRCUITRY IS DESIGNED TO KEEP THE PNP OUT OF
SATURATION ACROSS A WIDE RANGE OF CURRENT, TO KEEP QUIES-
CENT CURRENT TO A MINIMUM AND TO PROVIDE CURRENT LIMITING
TO PROTECT THE CHIP DURING SHORT-CIRCUIT CONDITIONS.
BURST MODE IS A REGISTERED A TRADEMARK OF LINEAR TECHNOLGY CORPORATION.
3464f
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3465 | 制造商:LINER 制造商全称:Linear Technology 功能描述:20mA LED Driver and OLED Driver with Integrated Schottky in 3mm x 2mm DFN |
| LT3465A | 制造商:LINER 制造商全称:Linear Technology 功能描述:Quad DCDC Converter for Triple Outputs TFT Supply Plus LED Driver |
| LT3465AES6 | 制造商:Linear Technology 功能描述:LED DRVR 6Segment 3.3V/5V/9V/12V/15V 6-Pin TSOT-23 |
| LT3465AES6#PBF | 制造商:Linear Technology 功能描述:LED DRVR 6Segment 3.3V/5V/9V/12V/15V 6-Pin TSOT-23 制造商:Linear Technology 功能描述:LED DRIVER BOOST PWM/ANALOGUE 1.2MHZ 制造商:Linear Technology 功能描述:LED DRIVER, BOOST, PWM/ANALOGUE, 1.2MHZ, 制造商:Linear Technology 功能描述:SP-SWREG/LED Driver, CUT TAPE White LED Step-up Converter with Intl Schottky 制造商:Linear Technology 功能描述:LED DRIVER, BOOST, PWM/ANALOGUE, 1.2MHZ, TSOT-23-6, Topology:Boost (Step Up), No. of Outputs:1, Output Voltage:30V, Driver Case Style:TSOT-23, Input Voltage Min:2.7V, Input Voltage Max:16V, Dimming Control Type:PWM / Analogue , RoHS Compliant: Yes |
| LT3465AES6#TR | 功能描述:IC LED DRIVR WHITE BCKLGT TSOT-6 RoHS:否 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 标准包装:6,000 系列:- 恒定电流:- 恒定电压:- 拓扑:开路漏极，PWM 输出数:4 内部驱动器:是 类型 - 主要:LED 闪烁器 类型 - 次要:- 频率:400kHz 电源电压:2.3 V ~ 5.5 V 输出电压:- 安装类型:表面贴装 封装/外壳:8-VFDFN 裸露焊盘 供应商设备封装:8-HVSON 包装:带卷 (TR) 工作温度:-40°C ~ 85°C 其它名称:935286881118PCA9553TK/02-TPCA9553TK/02-T-ND |
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