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| 型号： | TPS780330220DRVTG4 |
| 厂商： | Texas Instruments |
| 文件页数： | 20/33页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 3.3V/2.2V .15A 6-SON |
| 标准包装： | 250 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 3.3V，2.2V |
| 输入电压： | 2.2 V ~ 5.5 V |
| 稳压器数量： | 1 |
| 电流 - 输出： | 150mA（最小值） |
| 电流 - 限制（最小）： | 150mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-WDFN 裸露焊盘 |
| 供应商设备封装： | 6-SON 裸露焊盘（2x2） |
| 包装： | 带卷 (TR) |
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TPS780 Series
TI Information — Selective Disclosure
SBVS083D – JANUARY 2007 – REVISED SEPTEMBER 2012
INTERNAL CURRENT LIMIT
4.2V to 5.5V
2.2V
The TPS780 series are internally current-limited to
protect the regulator during fault conditions. During
V IN
1 m F
IN
OUT
1 m F
V OUT
current limit, the output sources a fixed amount of
current that is largely independent of output voltage.
For reliable operation, the device should not be
operated in a current limit state for extended periods
of time.
EN
TPS780
The PMOS pass element in the TPS780 series has a
built-in body diode that conducts current when the
voltage at OUT exceeds the voltage at IN. This
current is not limited, so if extended reverse voltage
V SET
GND
operation is anticipated, external limiting to 5% of
rated output current may be appropriate.
SHUTDOWN
The enable pin (EN) is active high and is compatible
with standard and low-voltage CMOS levels. When
shutdown capability is not required, EN should be
The TPS780 series, with internal active output pull-
down circuitry, discharges the output to within 5%
Figure 59. Circuit to Tie Both EN and V SET High
DROPOUT VOLTAGE
The TPS780 series use a PMOS pass transistor to
achieve low dropout. When (V IN – V OUT ) is less than
the dropout voltage (V DO ), the PMOS pass device is
the linear region of operation and the input-to-output
resistance is the R DS(ON) of the PMOS pass element.
V DO approximately scales with output current
because the PMOS device behaves like a resistor in
dropout. As with any linear regulator, PSRR and
transient response are degraded as (V IN – V OUT )
t=3
10k W ′ R L
10k W + R L
′ C OUT
(3)
approaches dropout. This effect is shown in the
Typical Characteristics section. Refer to application
report SLVA207, Understanding LDO Dropout ,
available for download from www.ti.com .
Where:
R L = output load resistance
C OUT = output capacitance
TRANSIENT RESPONSE
As with any regulator, increasing the size of the
output capacitor reduces over/undershoot magnitude
4.2V to 5.5V
2.2V to 3.3V
but increases duration of the transient response. For
V IN
IN
OUT
V OUT
1 m F
EN
TPS780
1 m F
ACTIVE V OUT PULL-DOWN
In the TPS780 series, the active pull-down discharges
V OUT when the device is off. However, the input
V SET High = V OUT(LOW)
V SET Low = V OUT(HIGH)
V SET
GND
voltage must be greater than 2.2V for the active pull-
down to work.
MINIMUM LOAD
The TPS780 series are stable with no output load.
Figure 58. Circuit Showing EN Tied High when
Shutdown Capability is Not Required
Traditional PMOS LDO regulators suffer from lower
loop gain at very light output loads. The TPS780
series employ an innovative, low-current circuit under
very light or no-load conditions, resulting in improved
output voltage regulation performance down to zero
output current. See Figure 47 for the load transient
response.
20
Copyright ? 2007–2012, Texas Instruments Incorporated
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| TPS780XXEVM-301 | 功能描述:电源管理IC开发工具 TPS780XXEVM-301 Eval Mod 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 |
| TPS78101DDCR | 功能描述:低压差稳压器 - LDO Sgl Output LDO 150 mA Adj RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| TPS78101DDCRG4 | 功能描述:低压差稳压器 - LDO Sgl Output LDO 150mA Adj RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| TPS78101DDCT | 功能描述:低压差稳压器 - LDO Sgl Output LDO 150mA Adj. RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| TPS78101DDCTG4 | 功能描述:低压差稳压器 - LDO Sgl Output LDO 150mA Adj RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
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