- 您现在的位置：买卖IC网 > PDF目录5138 > MAX8753ETI+ (Maxim Integrated Products)IC DC-DC CONV TFT LCD 28TQFN PDF资料下载
参数资料
| 型号： | MAX8753ETI+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/20页 |
| 文件大小： | 0K |
| 描述： | IC DC-DC CONV TFT LCD 28TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| 应用： | 转换器，TFT，LCD |
| 输入电压： | 2.6 V ~ 5.5 V |
| 输出数： | 4 |
| 输出电压： | 2.6 V ~ 13 V |
| 工作温度： | 0°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 供应商设备封装： | 28-TQFN-EP（5x5） |
| 包装： | 管件 |
TFT LCD DC-DC Converter with
Integrated Charge Pumps
V SUPP SUPP
D1
R ON
CLK
P1
C1N
D2
D3
P2
C2N
CLK
R ON
CONTROL
CONTROL
C1
C1N
C1P
CTRL
N1
N2
EA
OUTP
V POS
C POS
R1
C2P
C2
C2N
SUPP OV
THRESHOLD
R2
R5
REF
CHARGE-
PUMP
LOGIC
OSC
EA
FBP
MAX8753
Figure 4. Positive Charge-Pump Regulator Block Diagram
REF
R6
C2. If the voltage across C2 plus a diode drop (V C2 +
V DIODE ) is smaller than the first level-shifted flying
capacitor voltage (V C1 + V SUPP ), charge flows from C1
to C2 until diode D2 turns off. Similarly, when CLKB
becomes high, C2 is also level shifted by V SUPP volts.
This connects C2 in parallel with the reservoir capacitor
C POS . If the voltage across C POS plus a diode drop
(V POS + V DIODE ) is smaller than the second level-shift-
ed flying capacitor voltage (V C2 + V SUPP ), charge flows
from C2 to C POS until diode D3 turns off.
Negative Charge-Pump Regulator
The negative charge-pump regulator is typically used
to generate the negative supply rail for the TFT LCD
gate-driver ICs. The output voltage is set with an exter-
nal resistive voltage-divider from its output to REF with
the midpoint connected to FBN. The number of charge-
pump stages and the setting of the feedback divider
determine the output of the negative charge-pump reg-
ulator. The charge-pump controller includes a high-side
p-channel MOSFET (P3) and a low-side n-channel
MOSFET (N3) to control the power transfer as shown in
Figure 5. The negative charge pump can also be con-
figured as a multiple-stage charge pump. The required
number of stages (n neg ) is determined by V SUPN and
the desired negative output voltage. Figure 1 gives an
example with a two-stage negative charge pump.
In Figure 5, during the first half-cycle, the p-channel
MOSFET turns on and flying capacitor C3 charges to
V SUPN minus a diode drop. During the second half-
cycle, the p-channel MOSFET turns off, and the n-chan-
nel MOSFET turns on, level shifting C3. This connects
C3 in parallel with the reservoir capacitor C NEG . If the
voltage across C3 minus a diode drop is lower than the
voltage across C NEG , charge flows from C3 to C NEG
until the diode turns off. The amount of charge trans-
ferred to the output is controlled by the variable n-chan-
nel on-resistance.
______________________________________________________________________________________
13
相关PDF资料 |
PDF描述 |
|---|---|
| RSM31DRMH | CONN EDGECARD 62POS .156 WW |
| X40421S14I-CT1 | IC VOLT MON DUAL SUP/SW 14-SOIC |
| MAX607ESA+ | IC DC-DC CONVERT 8-SOIC |
| SIP21106DT-26-E3 | IC REG LDO 2.6V .15A TSOT23-5 |
| X40421S14I-C | IC VOLT MON DUAL SUP/SW 14-SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8753ETI+ | 功能描述:LCD 驱动器 TFT LCD Step-Up DC/DC Converter RoHS:否 制造商:Maxim Integrated 数位数量:4.5 片段数量:30 最大时钟频率:19 KHz 工作电源电压:3 V to 3.6 V 最大工作温度:+ 85 C 最小工作温度:- 20 C 封装 / 箱体:PDIP-40 封装:Tube |
| MAX8753ETI+T | 功能描述:LCD 驱动器 TFT LCD Step-Up DC/DC Converter RoHS:否 制造商:Maxim Integrated 数位数量:4.5 片段数量:30 最大时钟频率:19 KHz 工作电源电压:3 V to 3.6 V 最大工作温度:+ 85 C 最小工作温度:- 20 C 封装 / 箱体:PDIP-40 封装:Tube |
| MAX8753ETI-T | 功能描述:LCD 驱动器 RoHS:否 制造商:Maxim Integrated 数位数量:4.5 片段数量:30 最大时钟频率:19 KHz 工作电源电压:3 V to 3.6 V 最大工作温度:+ 85 C 最小工作温度:- 20 C 封装 / 箱体:PDIP-40 封装:Tube |
| MAX8753EVKIT | 功能描述:电源管理IC开发工具 MAX8753 Eval Kit RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| MAX8756ETI+ | 功能描述:电流和电力监控器、调节器 Interleaved Dual Power-Supply Ctlr RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。