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IFX21401 の電気的特性と機能

IFX21401のメーカーはInfineon Technologiesです、この部品の機能は「Low Dropout Voltage Tracking Regulator」です。


製品の詳細 ( Datasheet PDF )

部品番号 IFX21401
部品説明 Low Dropout Voltage Tracking Regulator
メーカ Infineon Technologies
ロゴ Infineon Technologies ロゴ 




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IFX21401 Datasheet, IFX21401 PDF,ピン配置, 機能
www.DataSheet.co.kr
IFX21401
Low Dropout Voltage Tracking Regulator
IFX21401MB
Data Sheet
Rev. 1.01, 2009-10-19
Standard Power
Datasheet pdf - http://www.DataSheet4U.net/

1 Page





IFX21401 pdf, ピン配列
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IFX21401
2 Block Diagram
Supply
CI
I
ADJ/EN Internal
Supply
IFX 21401MB
Saturation Control Temp.
Current Limitation Protection
Voltage
divider
optional
Reference
ADJ/EN
BlockDiagram. vsd
GND
Figure 1 Block Diagram and Typical Application Circuit
3 Pin Configuration
3.1 Pin Assignment
Block Diagram
Regulated
Q Output Voltage
CQ off-board
load
ADJ/EN
GND
1
2
5 GND
Figure 2
I3
4
Pi no ut.v s d
Pin Configuration Package PG-SCT595-5
Q
3.2 Pin Definitions and Functions
Pin Symbol Function
1 ADJ/EN Adjust / Enable.
Connect the reference to this pin. A low signal disables the IC; a high signal switches it on.
The reference voltage can be connected directly or by a voltage divider for lower output voltages.
For compensating line influences, a capacitor close to the IC pins is recommended.
2 GND
Ground Reference.
Internally connected to Pin 5. Connect to heatsink area.
3I
Input.
IC supply. For compensating line influences, a capacitor close to the IC pins is recommended.
4Q
Tracker Output.
Block to GND with a capacitor close to the IC terminals, respecting capacitance and ESR
requirements given in the table “Functional Range”.
5 GND
Ground Reference.
Internally connected to Pin 2. Connect to heatsink area.
Data Sheet
3 Rev. 1.01, 2009-10-19
Datasheet pdf - http://www.DataSheet4U.net/


3Pages


IFX21401 電子部品, 半導体
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IFX21401
Electrical Characteristics
5 Electrical Characteristics
5.1 Tracking Regulator
The output voltage VQ is controlled by comparing it to the voltage applied at pin ADJ/EN and driving a PNP pass
transistor accordingly. The control loop stability depends on the output capacitor CQ, the load current, the chip
temperature and the poles/zeros introduced by the integrated circuit. To ensure stable operation, the output
capacitor’s capacitance and its equivalent series resistor ESR requirements given in the table “Functional Range”
have to be maintained. For details see also the typical performance graph “Output Capacitor Series Resistor
ESRCQ vs. Output Current IQ”. Also, the output capacitor shall be sized to buffer load transients.
An input capacitor CI is recommended to buffer line influences. Connect the capacitors close to the IC terminals.
Protection circuitry prevent the IC as well as the application from destruction in case of catastrophic events. These
safeguards contain output current limitation, reverse polarity protection as well as thermal shutdown in case of
overtemperature.
In order to avoid excessive power dissipation beyond the capability of the pass element and the package, the
maximum output current is decreased at high input voltages.
The overtemperature protection circuit prevents the IC from immediate destruction under fault conditions (e. g.
output continuously short-circuited) by reducing the output current. Please note that a junction temperature above
150 °C is outside the maximum ratings and reduces the IC lifetime.
The IFX21401 is protected from a reverse (i.e. negative polarity) input voltage. During reverse input voltage there
is a small of current flowing into the IC and thermal shutdown protection is not operating. For reverse current
details refer to the electrical characteristics table and typical performance graphs.
Table 1 Electrical Characteristics Tracking Regulator
VI = 13.5 V; VADJ/EN 2.5 V; -40 °C Tj 125 °C; all voltages with respect to ground (unless otherwise specified).
Pos. Parameter
Symbol
Limit Values
Unit Conditions
Min. Typ. Max.
5.1.1
5.1.2
Output Voltage Tracking
Accuracy
5.1.3
5.1.4 Load Regulation
steady-state
ΔVQ -5 –
-25 –
-25 –
|dVQ,load| –
5 mV 1 mA IQ 10 mA;
6 V VI 16 V
25 mV 1 mA IQ 50 mA;
6 V VI 28 V
25 mV 1 mA IQ 10 mA;
6 V VI 40V
15 mV IQ = 1 mA to 30 mA;
5.1.5
5.1.6
5.1.7
5.1.8
Line Regulation
steady-state
Power Supply Ripple
Rejection
Dropout Voltage
Vdr = VI - VQ
Output Current Limitation
|dVQ,line| –
PSRR
Vdr
IQ,max
51
– 10 mV VI = 6 V to 40 V;
IQ = 10 mA
48 –
dB fripple = 100 Hz;
Vripple = 1 Vpp 1)
100 300 mV IQ = 10 mA
VADJ 4 V 2)
85 120 mA VQ = (VADJ - 0.1 V)
Data Sheet
6 Rev. 1.01, 2009-10-19
Datasheet pdf - http://www.DataSheet4U.net/

6 Page



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部品番号部品説明メーカ
IFX21401

Low Dropout Voltage Tracking Regulator

Infineon Technologies
Infineon Technologies


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