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| 型号： | TPS62110HPWP |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 1.5 A SWITCHING REGULATOR, 1100 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封装： | GREEN, PLASTIC, DSO-16 |
| 文件页数： | 5/25页 |
| 文件大小： | 0K |
| 代理商： | TPS62110HPWP |
V (nominal)
O
0.8%
1.6%
-1.6%
t
W
2 5
I
V
S K I P
I
(
)
(
max
)
(
max
min
L
R
on
DS
r
O
I
O
V
I
V
+
×
+
=
SLVSAO9B
– DECEMBER 2010 – REVISED FEBRUARY 2011
DETAILED DESCRIPTION (continued)
Figure 10. Power Save Mode Output Voltage Thresholds
The typical PFM (SKIP) current threshold for the TPS62110 is given by:
(1)
Equation 1 is valid for input voltages up to 7 V. For higher voltages, the skip current threshold is not increased
further. The converter enters the fixed frequency PWM mode as soon as the output voltage falls below VO –
1.6% (nominal).
SOFT START
The TPS62110 has an internal soft-start circuit that limits the inrush current during start-up. This prevents
possible voltage drops of the input voltage when a battery or a high-impedance power source is connected to the
input of the TPS62110.
The soft start is implemented as a digital circuit increasing the switch current in steps of 300 mA, 600 mA,
1200 mA. The typical switch current limit is 2.4 A. Therefore, the start-up time depends on the output capacitor
and load current. Typical start-up time with a 22-
μF output capacitor and 800-mA load current is 1 ms.
100% DUTY CYCLE LOW DROPOUT OPERATION
The TPS62110 offers the lowest possible input to output voltage difference while still maintaining operation with
the use of the 100% duty cycle mode. In this mode, the P-channel switch is constantly turned on. This is
particularly useful in battery-powered applications to achieve the longest operation time, taking full advantage of
the whole battery voltage range. The minimum input voltage to maintain regulation depends on the load current
and output voltage, and is calculated as:
(2)
with:
IOmax = maximum output current plus inductor ripple current
rDS(on)max = maximum P-channel switch rDS(on)
R(L) = dc resistance of the inductor
VOmax = nominal output voltage plus maximum output voltage tolerance
2010–2011, Texas Instruments Incorporated
13
Product Folder Link(s): TPS62110-HT
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| TPS62110MRSAREP | 功能描述:直流/直流开关调节器 Mil Enh 17V 1.5A Synch Step-Down Conv 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 |
| TPS62110QRSAREP | 功能描述:IC REG BUCK SYNC ADJ 1.5A 16QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:20 系列:SIMPLE SWITCHER® 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:12V 输入电压:4 V ~ 60 V PWM 型:电压模式 频率 - 开关:52kHz 电流 - 输出:1A 同步整流器:无 工作温度:-40°C ~ 125°C 安装类型:通孔 封装/外壳:16-DIP（0.300"，7.62mm） 包装:管件 供应商设备封装:16-DIP 其它名称:*LM2575HVN-12LM2575HVN-12 |
| TPS62110QRSARQ1 | 功能描述:直流/直流开关转换器 AC Adj,1.5A,17V Vin Step-Down Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| TPS62110RSA | 制造商:Texas Instruments 功能描述: |
| TPS62110RSAR | 功能描述:直流/直流开关调节器 Adj 1.5-A 17-V Vin 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 |
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