- 您现在的位置：买卖IC网 > PDF目录69519 > TPS62321YED (TEXAS INSTRUMENTS INC) 0.89 A SWITCHING REGULATOR, 3350 kHz SWITCHING FREQ-MAX, BGA8 PDF资料下载
参数资料
| 型号： | TPS62321YED |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 0.89 A SWITCHING REGULATOR, 3350 kHz SWITCHING FREQ-MAX, BGA8 |
| 封装： | LEAD FREE, DSBGA-8 |
| 文件页数： | 10/37页 |
| 文件大小： | 1401K |
| 代理商： | TPS62321YED |
第1页第2页第3页第4页第5页第6页第7页第8页第9页当前第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页
www.ti.com
APPLICATION INFORMATION
ADJUSTABLE OUTPUT VOLTAGE
V
O +
1.5
V
ref
1 )
R1
R2
with an internal reference voltage V
ref
typical + 0.4 V
(2)
AVIN
VIN
SW
TPS62300
L1
ADJ
C1
PGND
C2
VI
AGND
VOUT
R1
R2
EN
MODE/SYNC
A
FB
A
1
2
3
8
7
10
6
4
5
9
VO
1.6V/500mA
2.7V..6V
4.7
F
m
4.7
F
m
OUTPUT FILTER DESIGN (INDUCTOR AND OUTPUT CAPACITOR)
c +
1
2p
L
C
O
+
1
2p 1 mH
10 mF
+ 50.3 kHz
(3)
SLVS528E – JULY 2004 – REVISED NOVEMBER 2007
When the adjustable output voltage versions, TPS62300 or TPS62320, are used, the output voltage is set by the
external resistor divider (see Figure 32).
The output voltage is calculated as:
To keep the operating quiescent current to a minimum, it is recommended that R2 be set in the range of 75 k
to
130 k
. Route the FB line away from noise sources, such as the inductor or the SW line.
Figure 32. Adjustable Output Voltage Version
The TPS6230x, TPS6231x, and TPS6232x series of step-down converters have internal loop compensation.
Therefore, the external L-C filter must be selected to work with the internal compensation.
The device has been designed to operate with inductance values between a minimum of 0.7
H and maximum of
6.2
H. The internal compensation is optimized to operate with an output filter of L = 1 H and C
O = 10 F. Such
an output filter has its corner frequency at:
Operation with a higher corner frequency (e.g., L = 1
H, C
O = 4.7 F) is possible. However, it is recommended
the loop stability be checked in detail. Selecting a larger output capacitor value (e.g., 22
F) is less critical
because the corner frequency moves to lower frequencies with fewer stability problems. The possible output filter
combinations are listed in Table 1.
Regardless of the inductance value, operation is recommended with 10-
F output capacitor in applications with
high-load transients (e.g.,
≥ 1600 mA/
s).
Table 1. Output Filter Combinations
INDUCTANCE (L)
OUTPUT CAPACITANCE (CO)
1
H
≥ 4.7
F (ceramic capacitor)
2.2
H
≥ 2.2
F (ceramic capacitor)
The inductor value also has an impact on the pulse skipping operation. The transition into power-save mode
begins when the valley inductor current goes below a level set internally. Lower inductor values result in higher
ripple current which occurs at lower load currents. This results in a dip in efficiency at light load operations.
18
Copyright 2004–2007, Texas Instruments Incorporated
Product Folder Link(s): TPS62300, TPS62301, TPS62302 TPS62303, TPS62304, TPS62305, TPS62311, TPS62313,
相关PDF资料 |
PDF描述 |
|---|---|
| TPS62313YZDT | 0.89 A SWITCHING REGULATOR, 3350 kHz SWITCHING FREQ-MAX, BGA8 |
| TPS62315YZT | 0.89 A SWITCHING REGULATOR, 3350 kHz SWITCHING FREQ-MAX, BGA8 |
| TPS62301YZDR | 0.89 A SWITCHING REGULATOR, 3350 kHz SWITCHING FREQ-MAX, BGA8 |
| TPS62315YZ | 0.89 A SWITCHING REGULATOR, 3350 kHz SWITCHING FREQ-MAX, BGA8 |
| TPS62321YEDT | 0.89 A SWITCHING REGULATOR, 3350 kHz SWITCHING FREQ-MAX, BGA8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS62321YEDR | 功能描述:开关变换器、稳压器与控制器 1.5V 500-mA 3-MHz Step-Down Converter RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| TPS62321YEDT | 功能描述:开关变换器、稳压器与控制器 1.5V 500-mA 3-MHz Step-Down Converter RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| TPS62321YZDR | 功能描述:直流/直流开关调节器 1.5V 500-mA 3-MHz Step-Down 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 |
| TPS62321YZDT | 功能描述:直流/直流开关调节器 1.5V 500-mA 3-MHz Step-Down 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 |
| TPS62350EVM-201 | 功能描述:电源管理IC开发工具 STEP DOWN CONVERTER 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 |
发布紧急采购，3分钟左右您将得到回复。