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參數(shù)資料
| 型號： | TLE8386EL |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.09 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO14 |
| 封裝： | GREEN, PLASTIC, SSOP-14 |
| 文件頁數(shù)： | 8/26頁 |
| 文件大?。?/td> | 1527K |
| 代理商： | TLE8386EL |
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Datasheet
16
Rev. 1.0, 2009-11-30
TLE8386EL
Linear Regulator
8
Linear Regulator
8.1
Description
The internal linear voltage regulator supplies the internal gate drivers with a typical voltage of 5 V and current up
to 50 mA. An external output capacitor with low ESR is required on pin IVCC for stability and buffering transient
load currents. During normal operation the external boost MOSFET switche will draw transient currents from the
linear regulator and its output capacitor. Proper sizing of the output capacitor must be considered to supply
sufficient peak current to the gate of the external MOSFET switch. Please refer to application section for
recommendations on sizing the output capacitor. An integrated power-on reset circuit monitors the linear regulator
output voltage and resets the device in case the output voltage falls below the power-on reset threshold. The
power-on reset helps protect the external switches from excessive power dissipation by ensuring the gate drive
voltage is sufficient to enhance the gate of an external logic level n-channel MOSFET.
Figure 7
Voltage Regulator Block Diagram and Simplified Application Circuit
8.2
Electrical Characteristics
V
IN = 6V to 40V; 4.5V ≤ VFBH ≤ 40V, 4.5V ≤ VFBL ≤ 40V, Tj = -40 °C to +150 °C, all voltages with respect to ground,
positive current flowing into pin; (unless otherwise specified)
Pos.
Parameter
Symbol
Limit Values
Unit
Conditions
Min.
Typ.
Max.
8.2.1
Output Voltage
V
IVCC
4.6
5
5.4
V
6 V
≤ VIN ≤ 45 V
0.1 mA
≤ IIVCC ≤ 50 mA
8.2.2
Output Current Limitation
I
LIM
51
90
mA
V
IN = 13.5 V
V
IVCC = 4.5V
8.2.3
Drop out Voltage
V
DR
1400
mV
I
IVCC = 50mA
1)
1) Measured when the output voltage
V
CC has dropped 100 mV from its nominal value.
8.2.4
Output Capacitor
C
IVCC
0.47
–
F
2)
2) Minimum value given is needed for regulator stability; application might need higher capacitance than the minimum.
8.2.5
Output Capacitor ESR
R
IVCC,ESR
0.5
f = 10kHz
8.2.6
Undervoltage Reset Headroom
V
IVCC,HDRM
100
––mV
V
IVCC decreasing
V
IVCC - VIVCC,RTH,d
8.2.7
Undervoltage Reset Threshold
V
IVCC,RTH,d
4.0
––V
V
IVCC decreasing
8.2.8
Undervoltage Reset Threshold
V
IVCC,RTH,i
––
4.5
V
V
IVCC increasing
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