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| 型号： | TPS6735IDRG4 |
| 厂商： | Texas Instruments |
| 文件页数： | 11/18页 |
| 文件大小： | 0K |
| 描述： | IC REG INV -5V 0.2A 8SOIC |
| 标准包装： | 2,500 |
| 类型： | 反相 |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | -5V |
| 输入电压： | 4 V ~ 6.2 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 160kHz |
| 电流 - 输出： | 200mA |
| 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： | 8-SOIC（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-SOIC |
| 配用： | 296-10981-ND - EVAL MOD FOR TPS6735 |
TPS6735
FIXED NEGATIVE 5 V 200 mA INVERTING DC/DC CONVERTER
SLVS141A ? JULY 1996 ? REVISED JANUARY 1997
APPLICATION INFORMATION
system typical characteristics (continued)
70
C6 varied
SOFT-START DELAY
vs
CAPACITANCE
0.7
DRAIN-SOURCE ON-STATE RESISTANCE
vs
TEMPERATURE
60
(see Figure 7)
0.6
50
VI = 4 V
0.5
VI = 6 V
40
VI = 6 V
0.4
VI = 4 V
VI = 5 V
30
0.3
20
10
VI = 5 V
0.2
0.1
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 1.4
0
? 40 ? 20
0
20
40
60
80
100 120
140
C ? Capacitance ? μ F
Figure 13
T ? Temperature ? ° C
Figure 14
The TPS6735 operates in the voltage-inverting circuit, shown in Figure 15, which can generate a ?5-V output.
The circuit is ideal for applications that require a negative polarity voltage on the output with respect to the input
ground, and for energy management systems. The TPS6735 can be placed in a shutdown mode (1- μ A
quiescent current) by forcing EN low.
soft start
The soft-start capacitor provides an orderly start-up of the converter by slowly increasing the switch current limit
during power-up. The soft-start timing is controlled by the SS capacitance (see Figure 13 for the capacitance
value corresponding to the desired delay time). The switch current limit is proportional to the voltage applied
to SS, which is internally pulled to REF by a 1.2-M ? resistor. SS can be externally pulled lower than REF to limit
the switch current. A UVLO condition or an overcurrent condition initiates an SS cycle by discharging the SS
capacitor to ground through an internal transistor. A minimum of a 10-nF capacitor must be connected to SS
to current limit correctly.
inductor selection
The standard 10- μ H inductor required by the TPS6735 must have a saturation current greater than the peak
switch current at the desired maximum load. Operation over the full voltage range and current range is assured
by the 10- μ H inductor. To determine the required inductor staturation level, refer to the typical operating
characteristics graph for peak inductor current versus load current (see Figure 8).
?
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251?1443
POST OFFICE BOX 655303 ? DALLAS, TEXAS 75265
11
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相关代理商/技术参数 |
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| TPS6735IP | 功能描述:直流/直流开关调节器 200mA 12V DC/DC RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| TPS6735IPE4 | 功能描述:直流/直流开关调节器 Fixed Neg 5-V 200-MA Inv DC/DC Converter RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| TPS6755ID | 功能描述:直流/直流开关调节器 200mA 12V DC/DC RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| TPS6755IDG4 | 功能描述:直流/直流开关调节器 Adjustable Inverting DC-DC Converter RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| TPS6755IDR | 功能描述:直流/直流开关调节器 Adjustable Inverting DC-DC Converter RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
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