- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383737 > PC33710EW (飛思卡爾半導(dǎo)體(中國(guó))有限公司) Dual Output DC-DC & Linear Regulator IC PDF資料下載
參數(shù)資料
| 型號(hào)： | PC33710EW |
| 廠商： | 飛思卡爾半導(dǎo)體(中國(guó))有限公司 |
| 英文描述： | Dual Output DC-DC & Linear Regulator IC |
| 中文描述： | 雙輸出DC - DC |
| 文件頁數(shù)： | 9/17頁 |
| 文件大?。?/td> | 410K |
| 代理商： | PC33710EW |
Analog Integrated Circuit Device Data
Freescale Semiconductor
9
34710
FUNCTIONAL DESCRIPTION
INTRODUCTION
FUNCTIONAL DESCRIPTION
INTRODUCTION
V
I O
Switching Regulator
The V
I /O
switching regulator output voltage is determined
by the Mode digital input terminals. The 34710’s Mode
terminals select the output voltage. For example, if Mode2,
Mode1, and Mode0 are set to 0, 0, 0 (respectively) then V
I /O
will be set to 5.0 V; if Mode2, Mode1, and Mode0 are all left
floating (i.e., Open, Open, and Open), then the voltage for
V
I O
will be set to 3.3 V.
Table 2
provides the truth table for
setting the various combination of regulator outputs via the
Mode pins.
The topology of the regulator is a hysteretic buck regulator
operating from the internal ~200 kHz oscillator.
V
CORE
Linear Regulator
The V
CORE
linear LDO (low drop-out) regulator can
produce either a +3.3 V, 2.5 V, 1.8 V, or 1.5 V output voltage
at currents up to 500 mA. The input to the VCORE regulator
is a terminal that may be connected to the V
I O
regulator
output or to an external power supply. Note, the minimum
input voltage level must be equal to or greater than the
selected V
CORE
voltage + 0.8 V. (I.e., 0.8V is the LDO
regulator drop out voltage.)
The Mode terminals select the output voltage as depicted
in
Table 2
.
FUNCTIONAL TERMINAL DESCRIPTION
Power Supply Input (B+)
Main supply voltage for the V
I/O
Switching Regulator and
general chip bias circuitry.
Core Voltage Regulator Input (Lin B+)
Supply voltage for the V
CORE
Regulator. May be provided
by the V
I/O
regulator output or from an independent supply.
Mode Control (MODE 0,1,2)
Mode select terminals to select the V
I/O
and V
CORE
output
voltages per table 2. Pull to ground for low state, float for high
state.
Switching Capacitors 1 and 2 (CP1/CP2)
Terminals for the Charge Pump capacitor.
Boost Voltage (VB)
The Boost Voltage is an output terminal used for the
charge pump boost voltage and is a connection point for the
Charge Pump bulk capacitor.It provides a gate drive for the
V
I/O
Switch FET.
Reset (RST)
Reset is an output terminal for supervisory functions. This
terminal is in high state during normal operation and low state
during fault conditions. This terminal has no input function
and requires an external pull-up resistor.
The RST terminal is an open drain output driver to prevent
oscillations during the transition. It is recommended to
connect a 0.1 uF capacitor between the CT pin and RST pin.
Note: error conditions must be present for a minimum time,
t
FILTER
, before the 34710 responds to them. Once all error
conditions have been cleared, RST is held low for an
additional time of t
DELAY
.
Reset Delay Capacitor (CT)
This terminal is the external delay. It is used with a
capacitor to ground to delay RST turn-on time and to RST to
prevent RST oscillations during chip power-on.
VI/O Switching Regulator Feedback (VFB)
This terminal is the feedback input for the V
I/O
Switching
Regulator and the output of the regulator application.
VI/O Switching Regulator output (VSWITCH)
This terminal is the Switching output for the V
I/O
Buck
Regulator. It has internal high side FET.
Table 2. V
I O
and V
CORE
Regulator
Output Voltage Selection
Mode2
Mode1
Mode0
V
I /O
(V)
V
CORE
(V)
0
0
0
5.0
3.3
0
0
Open
3.3
2.5
0
Open
0
5.0
1.8
0
Open
Open
3.3
1.8
Open
0
0
5.0
2.5
Open
0
Open
3.3
2.5
Open
Open
0
5.0
1.5
Open
Open
Open
3.3
1.5
Open indicates terminal is not connected externally (i.e. floating).
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PC33710EWR2 | Dual Output DC-DC & Linear Regulator IC |
| PC33926PNB | 5.0 A Throttle Control H-Bridge |
| PC33926PNBR2 | 5.0 A Throttle Control H-Bridge |
| PC33975A | Multiple Switch Detection Interface with Suppressed Wake-Up and 32mA Wetting Current |
| PC33975AEK | Multiple Switch Detection Interface with Suppressed Wake-Up and 32mA Wetting Current |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PC33710EWR2 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Dual Output DC-DC & Linear Regulator IC |
| PC33730EK | 制造商:Freescale Semiconductor 功能描述:SWITCHING P/S OF POWER P - Bulk |
| PC33813AE | 制造商:Freescale Semiconductor 功能描述:PC33813AE - Bulk |
| PC33814AE | 制造商:Freescale Semiconductor 功能描述:PC33814AE - Bulk |
| PC33816AE | 制造商:Freescale Semiconductor 功能描述: |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。