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參數(shù)資料
| 型號： | TLE4254EJS |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | GREEN, PLASTIC, MS-012BA, SOP-8 |
| 文件頁數(shù)： | 20/21頁 |
| 文件大?。?/td> | 451K |
| 代理商： | TLE4254EJS |
TLE4254
Electrical Characteristics
Data Sheet
8
Rev. 1.2, 2009-11-18
5
Electrical Characteristics
5.1
Tracking Regulator
The output voltage
V
Q 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
C
Q, the load current, the chip
temperature and the poles/zeros introduced by the integrated circuit and the load. 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
ESR
CQ vs. Output Current IQ”. Also, the output capacitor shall be sized to buffer load transients.
An input capacitor
C
I is strongly 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 that could never be handled by 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. A thermal balance below 200 °C junction
temperature is established. Please note that a junction temperature above 150 °C is outside the maximum ratings
and reduces the IC lifetime.
The TLE4254 allows a negative supply voltage. However, several small currents are flowing into the IC increasing
its junction temperature. This has to be considered for the thermal design, respecting that the thermal protection
circuit is not operating during reverse polarity condition.
Table 1
Electrical Characteristics Tracking Regulator
V
I = 13.5 V; VADJ/EN ≥ 2.0 V; VFB = VQ (version GA / EJ A); -40 °C ≤ Tj ≤ 150 °C; CQ = 1 F;
all voltages with respect to ground (unless otherwise specified).
Pos.
Parameter
Symbol
Limit Values
Unit
Test Condition
Min.
Typ.
Max.
5.1.1
Output Voltage Tracking
Accuracy
VQ = VEN/ADJ - VQ
VQ
-5
–
5
mV
8 V
≤ VI ≤ 18 V;
0.1 mA
≤ IQ ≤ 60 mA;
V
ADJ/EN = 5 V
5.1.2
-10
–
10
mV
5.5 V
≤ VI ≤ 26 V;
0.1 mA
≤ IQ ≤ 60 mA;
V
ADJ/EN = 5 V
5.1.3
-10
–
10
mV
5.5 V
≤ VI ≤ 32 V;
0.1 mA
≤ IQ ≤ 30 mA;
V
ADJ/EN = 5 V
5.1.4
Load Regulation
steady-state
|d
V
Q,load|–
1
10
mV
I
Q = 0.1 mA to 70 mA;
V
ADJ/EN = 5 V
5.1.5
Line Regulation
steady-state
|d
V
Q,line|–
1
10
mV
V
I = 5.5 V to 32 V;
I
Q = 5 mA
V
ADJ/EN = 5 V
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| TLE4254EJSXUMA1 | 制造商:Infineon Technologies AG 功能描述:LINEAR VOLTAGE REGULATOR - Tape and Reel |
| TLE4254GA | 功能描述:低壓差穩(wěn)壓器 - LDO LDO Lin Adj Neg/Pos -5V to 45V 0.07A RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| TLE4254GAXUMA1 | 制造商:Infineon Technologies AG 功能描述:LDO Regulator Neg/Pos -5V to 45V 0.07A 8-Pin DSO 制造商:Infineon Technologies AG 功能描述:LINEAR VOLTAGE REGULATOR - Tape and Reel 制造商:Infineon Technologies AG 功能描述:LINEAR VOLTAGE REGULATOR - Cut TR (SOS) 制造商:Infineon Technologies AG 功能描述:IC REG LDO ADJ 70MA DSO8 制造商:Infineon Technologies AG 功能描述:IC LOW DROP VOLTAGE TRACKER DSO8 |
| TLE4254GS | 功能描述:低壓差穩(wěn)壓器 - LDO LDO Lin Adj Neg/Pos -5V to 45V 0.07A RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| TLE4254GSXUMA1 | 制造商:Infineon Technologies AG 功能描述:LDO Regulator Neg/Pos -5V to 45V 0.07A 8-Pin DSO 制造商:Infineon Technologies AG 功能描述:LINEAR VOLTAGE REGULATOR - Tape and Reel 制造商:Infineon Technologies AG 功能描述:IC REG LDO ADJ 70MA DSO8 制造商:Infineon Technologies AG 功能描述:IC LOW DROP VOLTAGE TRACKER DSO8 |
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