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TPS62120DCNR

更新时间： 2024-11-04 05:55:07
品牌 Logo 应用领域
德州仪器 - TI 转换器
页数 文件大小 规格书
33页 5635K
描述
15V, 75mA High Efficient Buck Converter

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TPS62120DCNR 数据手册

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TPS62120  
TPS62122  
www.ti.com  
SLVSAD5 –JULY 2010  
15V, 75mA High Efficient Buck Converter  
Check for Samples: TPS62120 , TPS62122  
1
FEATURES  
DESCRIPTION  
•
•
•
Wide Input Voltage Range 2V to 15V  
Up to 96% Efficiency  
The TPS6212X device family is a high efficient  
synchronous step down DC-DC converter optimized  
for low power applications. It supports up to 75mA  
output current and allows the use of tiny external  
inductors and capacitors.  
Power Save Mode with 11 µA Quiescent  
Current  
•
•
•
•
•
•
•
Output Current 75mA  
Output Voltage Range 1.2V to 5.5V  
Up to 800kHz Switch Frequency  
Synchronous Converter, no External Rectifier  
Low Output Ripple Voltage  
The wide operating input voltage range of 2V to 15V  
supports energy harvesting, battery powered and as  
well 9V or 12V line powered applications.  
With its advanced hysteretic control scheme the  
converter provides power save mode operation. At  
light loads the converter operates in PFM mode  
(pulse frequency modulation) and transitions  
automatically in PWM (pulse width modulation) mode  
at higher load currents. The Power Save Mode  
maintains high efficiency over the entire load current  
range. The hysteretic control scheme is optimized for  
low output ripple voltage in PFM mode in order to  
reduce output noise to a minimum. It consumes only  
10uA quiescent current from VIN in PFM mode  
operation.  
100% Duty Cycle for Lowest Dropout  
Small SOT 8 pin (TPS62120) and 2x2 SON 6  
pin (TPS62122) Package  
•
•
•
Internal Soft Start  
Power Good Open Drain Output TPS62120  
Open Drain Output for Output Discharge  
TPS62120  
•
2.5V Rising / 1.85V Falling UVLO Thresholds  
APPLICATIONS  
In shutdown mode, the device is turned off.  
•
•
•
•
Low Power RF Applications  
Ultra Low Power Microprocessor  
Energy Harvesting  
An open drain power good output is available in the  
TPS62120 and indicates once the output voltage is in  
regulation.  
Industrial Measuring  
TPS62120 has an additional SGND pin which is  
connected to GND during shutdown mode. This  
output can be used to discharge the output capacitor.  
The TPS62120 is available in a small 3×3 mm2 8 pin  
SOT 23 package and the TPS62122 in a 2×2 mm2 6  
pin SON package.  
100  
V
= 5.5 V  
IN  
V
= 1.8 V  
90  
80  
OUT  
up to 75 mA  
TPS62120  
V
= 2.5 V to 15 V  
IN  
V
= 8 V  
L 22 mH  
IN  
VIN  
EN  
SW  
FB  
V
= 10 V  
IN  
R
1
V
= 12 V  
IN  
C
OUT  
4.7 mF  
300 kW  
V
= 15 V  
IN  
Cff  
22 pF  
70  
60  
C
IN  
4.7 mF  
R
2
240 kW  
GND  
VOUT  
50  
40  
30  
V
= 5 V,  
O
R
SGND  
PG  
pullup 100kW  
L = 18 mH,  
LPS3015,  
PWR GOOD  
C
= 4.7 mF  
O
0.1  
1
10  
- Output Current - mA  
100  
I
O
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2010, Texas Instruments Incorporated  
1234567...33

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TPS62120DCNR 替代型号

型号 品牌 替代类型 描述 数据表
TPS62120DCNT TI

完全替代

 15V, 75mA High Efficient Buck Converter

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