- 您现在的位置：买卖IC网 > PDF目录69519 > TPS62306DRC (TEXAS INSTRUMENTS INC) SWITCHING REGULATOR, 3350 kHz SWITCHING FREQ-MAX, PDSO10 PDF资料下载
参数资料
| 型号： | TPS62306DRC |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, 3350 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封装： | PLASTIC, QFN-10 |
| 文件页数： | 8/25页 |
| 文件大小： | 831K |
| 代理商： | TPS62306DRC |
www.ti.com
PRODUCT
PREVIEW
ENABLE
UNDERVOLTAGE LOCKOUT
SHORT-CIRCUIT PROTECTION
THERMAL SHUTDOWN
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
(1)
VIN
AVIN
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
1.6 V/500 mA
2.7 V . . 6 V
4.7 mF
TPS62300, TPS62301, TPS62302
TPS62303, TPS62304, TPS62305
TPS62306, TPS62320, TPS62321
SLVS528 – JULY 2004
DETAILED DESCRIPTION (continued)
The device starts operation when EN is set high and starts up with the soft start as previously described.
Pulling the EN pin low forces the device into shutdown, with a shutdown quiescent current of typically 0.1 A. In
this mode, the P and N-channel MOSFETs are turned off, the internal resistor feedback divider is disconnected,
and the entire internal-control circuitry is switched off. When an output voltage is present during shutdown mode,
which can be caused by an external voltage source or super capacitor, the reverse leakage is specified under
electrical characteristics. For proper operation, the EN pin must be terminated and must not be left floating.
In addition, the TPS6232x devices integrate a resistor, typically 35
, to actively discharge the output capacitor
when the device turns off. The required time to discharge the output capacitor at VO depends on load current.
The undervoltage lockout circuit prevents the device from misoperation at low input voltages. It prevents the
converter from turning on the switch or rectifier MOSFET under undefined conditions.
As soon as the output voltage falls below 50% of the nominal output voltage, the converter current limit is
reduced by 50% of the nominal value. Because the short-circuit protection is enabled during start-up, the device
does not deliver more than half of its nominal current limit until the output voltage exceeds 50% of the nominal
output voltage. This needs to be considered when a load acting as a current sink is connected to the output of
the converter.
As soon as the junction temperature, TJ, exceeds typically 150°C, the device goes into thermal shutdown. In this
mode, the P- and N-channel MOSFETs are turned off. The device continues its operation when the junction
temperature falls below typically 130
°C again.
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 300 k
to 500 k
. Route the FB line away from noise sources, such as the inductor or the SW line.
Figure 32. Adjustable Output Voltage Version
16
相关PDF资料 |
PDF描述 |
|---|---|
| TPS62311YZD | 0.89 A SWITCHING REGULATOR, 3350 kHz SWITCHING FREQ-MAX, BGA8 |
| TPS62321YED | 0.89 A SWITCHING REGULATOR, 3350 kHz SWITCHING FREQ-MAX, BGA8 |
| 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 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS62311YZDR | 功能描述:直流/直流开关调节器 Adj 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 |
| TPS62311YZDT | 功能描述:直流/直流开关调节器 Adj 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 |
| TPS62312YZDR | 制造商:Texas Instruments 功能描述: |
| TPS62313YZDR | 功能描述:直流/直流开关调节器 1.8V 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 |
| TPS62313YZDT | 功能描述:直流/直流开关调节器 1.8V 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 |
发布紧急采购，3分钟左右您将得到回复。