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参数资料
| 型号： | TPS650242RHB |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC32 |
| 封装： | 5 X 5 MM, PLASTIC, QFN-32 |
| 文件页数： | 15/35页 |
| 文件大小： | 955K |
| 代理商： | TPS650242RHB |
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VDCDC1
EN_DCDC1
DEFDCDC1
AGND
PGND
L1
R1
R2
VOUT
L
COUT
VCC
VINDCDC1
CIN
1 F
m
10R
Vbat
V
OUT + VDEFDCDCx
R1 ) R2
R2
R1 + R2
V
OUT
V
DEFDCDCx
* R2
Voltage Change on VDCDC3
SLVS774B – JUNE 2007 – REVISED JULY 2009 .............................................................................................................................................................. www.ti.com
Table 4. Voltage Options
PIN
LEVEL
DEFAULT OUTPUT VOLTAGE
DEFDCDC1
All versions
VCC
3.3V
GND
2.80V
DEFDCDC2
All versions
VCC
2.5V
GND
1.8V
DEFDCDC3
TPS650240
VCC
1.3V
GND
1.0V
TPS650241
VCC
1.375V
GND
0.9V
TPS650242
VCC
1.5V
GND
1.0V
TPS650243
VCC
1.2V
GND
1.0V
TPS650244
VCC
1.6V
GND
1.55V
TPS650245
VCC
1.1V
GND
0.9V
If a different voltage is needed, an external resistor divider can be added to the DEFDCDC1 or DEFDCDC2 pin
as shown below:
When a resistor divider is connected to DEFDCDC1 or DEFDCDC2, the output voltage can be set from 0.6V up
to the input voltage Vbat. The total resistance (R1+R2) of the voltage divider should be kept in the 1M range in
order to maintain a high efficiency at light load. VDEFDCDCx = 0.6V
The output voltage of VDCDC3 can be changed during operation from e.g. 1.0V to 1.3V (TPS650240) and back.
While the output voltage at VDCDC1 and VDCDC2 is fixed after the device exits undervoltage lockout (UVLO),
the status of the DEFDCDC3 pin is sensed during operation and the voltage is changed as soon as the logic
level on this pin changes from low to high or vice versa. Therefore it is not possible to connect a resistor divider
to DEFDCDC3 and set a voltage different from the predefined voltages.
22
Copyright 2007–2009, Texas Instruments Incorporated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS650242RHBR | 功能描述:电池管理 Pwr Mgmt ICs for Li-Ion Powered Sys RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| TPS650242RHBRG4 | 功能描述:电池管理 Pwr Mgmt ICs RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| TPS650242RHBT | 功能描述:电池管理 Pwr Mgmt ICs for Li-Ion Powered Sys RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| TPS650242RHBTG4 | 功能描述:电池管理 Pwr Mgmt ICs RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| TPS650243QRHBRQ1 | 功能描述:电池管理 AC Pwr Mgmt Ics RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
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