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| 型号： | TPS780330220DRVTG4 |
| 厂商： | Texas Instruments |
| 文件页数： | 17/33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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TI Information — Selective Disclosure
TPS780 Series
SBVS083D – JANUARY 2007 – REVISED SEPTEMBER 2012
APPLICATION INFORMATION
Regulator
APPLICATION EXAMPLES
The TPS780 series of LDOs typically take less than
800 μ s to transition from a lower voltage of 2.2V to a
higher voltage of 3.3V under an output load of
150mA; see Figure 51 . Additionally, the TPS780
The output voltage of the TPS78001 adjustable
regulator is programmed using an external resistor
divider as shown in Figure 55 . The output voltage
operating range is 1.2V to 5.1V, and is calculated
V OUT FB ′ ( 1 +
series contain active pull-down circuitry that
automatically pulls charge out of the voltage capacitor
to transition the output voltage from the higher
=V
R 1
R 2
)
(1)
voltage to the lower voltage, even with no load
connected. Output voltage overshoots and
undershoots are minimal under this load condition.
The TPS780 series typically take less than 800 μ s to
transition from V SET low (3.3V to 2.2V), or V SET high
(2.2V to 3.3V); see Figure 51 and Figure 52 . Both
output states of the TPS780 series are factory-
programmable between 1.5V to 4.2V. Note that
during startup or steady-state conditions, it is
important that the EN pin and V SET pin voltages never
exceed V IN + 0.3V.
Where:
V FB = 1.216V typ (the internal reference voltage)
Resistors R 1 and R 2 should be chosen for
approximately 1.2 μ A divider current. Lower value
resistors can be used for improved noise
performance, but the solution consumes more power.
Higher resistor values should be avoided because
leakage current into/out of FB across R 1 /R 2 creates
an offset voltage that artificially increases/decreases
the feedback voltage and thus erroneously
decreases/increases V OUT . Table 3 lists several
V IN
4.2V to 5.5V
IN
OUT
2.2V to 3.3V
V OUT
common output voltages and resistor values. The
recommended design procedure is to choose R 2 =
1 m F
TPS780
1 m F
1M ? to set the divider current at 1.2 μ A, and then
Off
On
EN
R 1 =
(
V OUT
V FB
- 1 ) ′ R 2
(2)
V SET High = V OUT(LOW)
V SET Low = V OUT(HIGH)
V SET
GND
V IN
1 m F
IN
OUT
V OUT
1 m F
TPS78001
R 1
Figure 54. Typical Application Circuit
The TPS780 is also used effectively in dynamic
voltage scaling (DVS) applications. DVS applications
are required to dynamically switch between a high
EN
GND
FB
R 2
operational voltage to a low standby voltage in order
to reduce power consumption. Modern multimillion
gate microprocessors fabricated with the latest sub-
V OUT =V FB ′ (1 +
R 1
R 2
)
micron processes save power by transitioning to a
lower voltage to reduce leakage currents while
maintaining content. This architecture enables the
Figure 55. TPS78001 Adjustable LDO Regulator
Programming
microprocessor
to
transition
quickly
into
an
operational state (wake up) without requiring a reload
of the states from external memory, or a reboot.
Table 3. Output Voltage Programming Guide
Programming the TPS78001 Adjustable LDO
OUTPUT VOLTAGE
1.8V
2.8V
5.0V
R 1
0.499M ?
1.33M ?
3.16M ?
R 2
1M ?
1M ?
1M ?
Copyright ? 2007–2012, Texas Instruments Incorporated
17
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| 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 |
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| 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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