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| 型号： | TPS60150DRVT |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 1.4 A SWITCHED CAPACITOR REGULATOR, 1500 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封装： | 2 X 2 MM, GREEN, PLASTIC, SON-6 |
| 文件页数： | 4/21页 |
| 文件大小： | 1707K |
| 代理商： | TPS60150DRVT |
CP-
VIN
VOUT
GND
CP+
ENA
VIN
VOUT
(5V)
ENABLE
/DISABLE
COUT
CIN
CF
charging
FLY
CFLY
discharging
discharge
LO AD(MAX)
Q
= c
v = C
V
,
T
Q
= i
t = 2
I
, half duty.
2
D
÷
è
LOAD(MAX)
FLY
CFLY
T
2
I
= C
V
2
\
D
÷
è
÷
è
\
D
LOAD(MAX)
FLY
CFLY
T
2
I
2
C
=
V
(
)
=
+
LOAD(MAX)
OUT(RIPPLE)
LOAD(MAX)
COUT
OUT
I
V
2I
ESR
2 f C
=
OUT
IN
OUT
Q
IN
V
I
PD(out)
Efficiency(%) =
100 =
100 , I
2
I
+ I
PD(in)
V
I
SLVS888B
– DECEMBER 2008 – REVISED FEBRUARY 2011
SHUTDOWN MODE
An enable pin on the regulator may be used to place the device into an energy-saving shutdown mode. In this
mode, the output is disconnected from the input and the input quiescent current is reduced to 1
μA maximum.
CAPACITOR SELECTION
For minimum output voltage ripple, the output capacitor (COUT) should be a surface-mount ceramic capacitor.
Tantalum capacitors generally have a higher Effective Series Resistance (ESR) and may contribute to higher
output voltage ripple. Leaded capacitors also increase ripple due to the higher inductance of the package itself.
To achieve the best operation with low input voltage and high load current, the input and flying capacitors (CIN
and CF, respectively) should also be surface-mount ceramic types.
Figure 25. Capacitors
Generally, CFLY can be calculated by simple equation as follows,
(1)
Both equation should be same,
(2)
If ILOAD = 140 mA, f = 1.5MHZ, and ΔVCFLY = 100mV, the minimum value of the flying capacitor should be 1μF.
Output capacitance, COUT, is also strongly related to output ripple voltage and loop stability,
(3)
The minimum output capacitance for all output levels is 2.2
μF due to control stability. Larger ceramic capacitors
or low ESR capacitors can be used to lower the output ripple voltage.
Table 2. Suggested Capacitors (Input / Output / Flying Capacitor)
Dielectric
Rated working
Manufacturer
Part number
Value
Tolerance
Package Size
material
voltage
4.7uF
X7R
6.3V
2.2uF
The efficiency of the charge pump regulator varies with the output voltage, the applied input voltage and the load
current.
The approximate efficiency in normal operating mode is given by:
(4)
12
2008–2011, Texas Instruments Incorporated
Product Folder Link(s): TPS60150
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS60150EVM-359 | 功能描述:电源管理IC开发工具 TPS60150EVM-359 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 |
| TPS60151 | 制造商:TI 制造商全称:Texas Instruments 功能描述:TPS60151 5V/140mA Charge Pump Device |
| TPS60151ADRVR | 制造商:Texas Instruments 功能描述: |
| TPS60151DRV | 制造商:TI 制造商全称:Texas Instruments 功能描述:TPS60151 5V/140mA Charge Pump Device |
| TPS60151DRVR | 功能描述:电荷泵 140mA,5V Charge Pump RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
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