TLE4307D V38 Infineon Technologies, TLE4307D V38 Datasheet - Page 3

• Manufacturer Part Number: TLE4307D V38
• Description: IC CHARGE PUMP/LDO REG DPAK-5
• Manufacturer: Infineon Technologies
• Type: Switched Capacitor (Charge Pump)r

Specifications of TLE4307D V38

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 2
• Voltage - Output: 3.8V
• Current - Output: 800mA
• Voltage - Input: 4.5 ~ 25 V
• Mounting Type: Surface Mount
• Package / Case: DPak, TO-252 (2 leads+tab), SC-63
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -
• Operating Temperature: -
• Frequency - Switching: -
• Other names: SP000012828; TLE4307DV38T

Figure 2
Circuit Description
The TLE 4307 consists of 2 stages, the charge pump and the very low drop voltage
regulator.
Charge Pump
The power stage is used as a switching element, that is driven by a buffer. A current
source keeps the power stage on. When the output C of the charge pump reaches
the power stage is switched off. It is active clamped, when the input I reaches
Optional, an external capacity can be connected between pin SL and I to limit the slew
rate at the input, when an inductive load drives the IC. Saturation control as a function of
the load current prevents any oversaturation of the power element. The regulator is
additionally protected against overload and overtemperature.
Very Low Drop Regulator
The control amplifier compares a reference voltage, made highly accurate by resistance
balancing, with a voltage proportional to the output voltage and drives the base of the
series PNP transistor via a buffer. Saturation control as a function of the load current
prevents any oversaturation of the power element. The regulator is additionally protected
against overload and overtemperature.
Data Sheet
Block Diagram
SL
I
1
4
Charge
Power
Pump
TLE 4307
3
C
2
Low-Drop
Regulator
GND
Very
3
AES02793
5
Q
Rev. 1.2, 2004-01-01
TLE 4307
V
V
C,off
I,cl
,
.