TLE 4253GS Infineon Technologies, TLE 4253GS Datasheet - Page 7

• Manufacturer Part Number: TLE 4253GS
• Manufacturer: Infineon Technologies

Specifications of TLE 4253GS

• Packages: PG-DSO-8
• Regulator Type: tracker
• Output Voltage: adj.
• Accuracy: 0.5 %
• Max. Output Current: 250mA
• Dropout Voltage: 280mV

5
5.1
The output voltage
transistor accordingly. The control loop stability depends on the output capacitor
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
ESR
An input capacitor
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.
An overtemperature protection circuit prevents the IC from immediate destruction under fault conditions (e. g.
output continuously short-circuited to GND) 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 TLE4253 allows a negative supply voltage. However, several small currents are flowing into the IC. For details
see electrical characteristics table and typical performance graph. The thermal protection circuit is not operating
during reverse polarity condition.
Table 1
V
all voltages with respect to ground (unless otherwise specified).
Pos.
5.1.1
5.1.2
5.1.3
5.1.4
5.1.5
5.1.6
Data Sheet
I
= 13.5 V;
CQ
vs. Output Current
Parameter
Output Voltage Tracking
Accuracy
∆
Load Regulation
steady-state
steady-state
Rejection
Line Regulation
Power Supply Ripple
V
Q
V
Electrical Characteristics
Tracking Regulator
Electrical Characteristics Tracking Regulator
=
ADJ/EN
V
EN/ADJ
C
V
≥ 2.0 V;
I
Q
is strongly recommended to buffer line influences. Connect the capacitors close to the IC
is controlled by comparing it to the voltage applied at pin ADJ/EN and driving a PNP pass
-
V
Q
I
Q
”. Also, the output capacitor shall be sized to buffer load transients.
V
FB
=
V
Q
; -40 °C ≤
Symbol
∆
|d
|d
PSRR
V
V
V
Q
Q,load
Q,line
|
| –
T
j
Min.
-5
–
60
-10
-15
≤ 150 °C;
Limit Values
7
–
–
–
–
Typ.
–
–
Max.
5
10
15
10
10
–
Unit
mV
mV
mV
mV
mV
dB
Test Condition
I
V
0.1 mA ≤
3.5 V ≤
V
0.1 mA ≤
9 V ≤
V
I
V
V
I
V
f
V
C
ripple
Q
Q
Q
ADJ/EN
ADJ/EN
ADJ/EN
ADJ/EN
I
ADJ/EN
ripple
Q
= 6 V to 32 V;
= 30 mA;
= 0.1 mA to 200 mA;
= 10 mA
C
= 10 µF, ceramic type
Q
= 100 Hz;
Electrical Characteristics
, the load current, the chip
V
= 1 Vpp
I
= 5 V
= 2 V
= 5 V
= 5 V
= 5 V
V
≤ 32 V
I
I
I
≤ 32 V
Q
Q
Rev. 1.2, 2009-11-09
≤ 200 mA;
≤ 250 mA;
TLE4253
1)