- 您现在的位置：买卖IC网 > PDF目录199467 > TPS65181RGZR (TEXAS INSTRUMENTS INC) POWER SUPPLY MANAGEMENT CKT, PQCC48 PDF资料下载
参数资料
| 型号： | TPS65181RGZR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | POWER SUPPLY MANAGEMENT CKT, PQCC48 |
| 封装： | 7 X 7 MM, 0.90 MM HEIGHT, GREEN, PLASTIC, VQFN-48 |
| 文件页数： | 7/41页 |
| 文件大小： | 892K |
| 代理商： | TPS65181RGZR |
第1页第2页第3页第4页第5页第6页当前第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页
DAC
VCOM
MUX
VCOM_PWR
VCOM_XADJ
4.7uF
VNEG
4.7uF
VREF (2.25V)
VREF
VCOM
VIN
10uF
From Input Supply
(3.0V-6.0V)
4.7uF
From DCDC 2 (-17V)
-17V
-0.3...-2.5V
VCOM_SET[7:0]
VCOM_ADJ
GATE DRIVER
VCOM_PANEL
4.7uF
To Eiink
VIXPLEX
TM Panel
VCOM_CTRL
From uC or DSP
SLVSA76F
– MARCH 2010 – REVISED FEBRUARY 2011
VCOM ADJUSTMENT
Through the I2C interface the user can select between two methods of VCOM voltage adjustment:
1. Using the internal 8-bit DAC and register control.
2. Using an external voltage source (resistor divider) connected to the VCOM_XADJ pin.
VCOM ADJUSTMENT THROUGH REGISTER CONTROL
By default the TPS65180/TPS65180B is setup for internal VCOM control through the I2C interface. The default
setting for the 8-bit DAC is 0x74h which results in 1.25 V
±0.8% for VCOM. VCOM can be adjusted up or down
in
steps
of
11 mV (typ) by writing to the VCOM_ADJUST register. The output range for VCOM is limited to
–0.3 V to –2.5 V.
Figure 4. Block Diagram of VCOM Circuit
VCOM ADJUSTMENT THROUGH EXTERNAL POTENTIOMETER
VCOM can be adjusted by an external potentiometer by setting the VCOM_ADJ bit of the VN_ADJUST register
to 0 and connecting a potentiometer to the VCOM_XADJ pin. The potentiometer must be connected between
ground and a negative supply as shown in Figure 4. The gain from VCOM_XADJ to VCOM is 1 and therefore the
voltage applied to VCOM_XADJ pin should range from
–0.3 V to –2.5 V.
VPOS / VNEG SUPPLY TRACKING
LDO1 (VPOS) and LDO2 (VNEG) track each other in a way that they are of opposite sign but same magnitude.
The sum of VLDO1 and VLOD2 is guaranteed to be
< 50 mV. To ensure proper tracking of the supplies the
VPOS_SET[2:0] bits of the VP_ADUST register must remain at the default setting of 010b. To adjust the
VPOS/VNEG output voltage, write to the VN_ADJUST register only and keep the VPOS_SET[2:0] bits of the
VP_ADUST register unchanged.
FAULT HANDLING AND RECOVERY
The TPS65180/TPS65181 and TPS65180B/TPS65181B monitor input and output voltages and die temperature
and will take action if operating conditions are outside normal limits. Whenever the TPS65180/TPS65181 and
TPS65180B/TPS65181B encounter:
Thermal Shutdown (TSD)
Positive Boost Under Voltage (VB_UV)
Inverting Buck-Boost Under Voltage (VN_UV)
Input Under Voltage Lock Out (UVLO)
it will shut down all power rails and enter STANDBY mode. Shut down follows the reverse power-up sequence
defined by the PWR_SEQx registers. Once a fault is detected, the PWR_GOOD and nINT pin are pulled low and
the corresponding interrupt bit is set in the interrupt register.
2010–2011, Texas Instruments Incorporated
15
相关PDF资料 |
PDF描述 |
|---|---|
| TPS721A | FIBER OPTIC PHOTODIODE DETECTOR, THROUGH HOLE MOUNT |
| TPS793285DBVRQ1 | 2.85 V FIXED POSITIVE LDO REGULATOR, 0.2 V DROPOUT, PDSO5 |
| TPSMA11A/5A | 400 W, UNIDIRECTIONAL, SILICON, TVS DIODE, DO-214AC |
| TPSMA15A/5A | 400 W, UNIDIRECTIONAL, SILICON, TVS DIODE, DO-214AC |
| TPSMB33/5 | 600 W, UNIDIRECTIONAL, SILICON, TVS DIODE, DO-214AA |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS65181RGZT | 功能描述:LCD Gamma缓冲器 Pwr Mgmt IC for Elec Paper Display RoHS:否 制造商:Maxim Integrated 输入补偿电压: 转换速度: 电源电压-最大:20 V 电源电压-最小:9 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-38 封装:Tube |
| TPS65182BRGZR | 功能描述:LCD Gamma缓冲器 PMIC for E Ink Vizplex RoHS:否 制造商:Maxim Integrated 输入补偿电压: 转换速度: 电源电压-最大:20 V 电源电压-最小:9 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-38 封装:Tube |
| TPS65182BRGZT | 功能描述:LCD Gamma缓冲器 PMIC for E Ink Vizplex RoHS:否 制造商:Maxim Integrated 输入补偿电压: 转换速度: 电源电压-最大:20 V 电源电压-最小:9 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-38 封装:Tube |
| TPS65182RGZR | 功能描述:LCD Gamma缓冲器 Pwr Mgt IC for E Ink Vizplex RoHS:否 制造商:Maxim Integrated 输入补偿电压: 转换速度: 电源电压-最大:20 V 电源电压-最小:9 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-38 封装:Tube |
| TPS65182RGZT | 功能描述:LCD Gamma缓冲器 Pwr Mgt IC for E Ink Vizplex RoHS:否 制造商:Maxim Integrated 输入补偿电压: 转换速度: 电源电压-最大:20 V 电源电压-最小:9 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-38 封装:Tube |
发布紧急采购，3分钟左右您将得到回复。