AN77L03M-E1 Panasonic - SSG, AN77L03M-E1 Datasheet - Page 10

• Manufacturer Part Number: AN77L03M-E1
• Description: VOLT REG POS 3V 100MA SMD TO-243
• Manufacturer: Panasonic - SSG

Specifications of AN77L03M-E1

• Regulator Topology: Positive Fixed
• Voltage - Output: 3V
• Voltage - Input: Up to 30V
• Number Of Regulators: 1
• Current - Output: 100mA
• Operating Temperature: -30°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: SC-62, SOT-89, TO-243 (3 Leads + Tab)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Voltage - Dropout (typical): -
• Current - Limit (min): -
• Other names: AN77L03M-E1TR; AN77L03ME1; AN77L03ME1TR

AN77L03M
1. Input short-circuit protection circuit
2. Short-circuit between the output pin and the GND pin
3. Capacitor for external compensation
Usage Notes
with GND pin (pin 2) in the normal operation condition, the potential of output pin (pin 1) becomes higher than that of DC input
pin and the electric charges which is charged in output capacitor C
elements.
incorporated in the internal circuit, the protection diode is not required.
"Figure 3". When your use under a high voltage happens to cause any short-circuit between the output pin (pin 1) and the GND pin
(pin 2), the IC is likely to be broken.
(pin 1) and GND pin (pin 2) as possible. When it is used under low temperature, oscillation may occur due to the decrease of the
aluminum electrolytic capacitor's capacitance and an increase of ESR. For the AN77LxxM series, it is recommended that the
tantalum capacitor or aluminum electrolytic capacitor whose equivalent serial resistance with temperature characteristics within the
recommended range specified in “Figure 2" should be used.
For the conventional Panasonic 3-pin regulators (such as of the AN80xx series), when DC input pin (pin 3) is short-circuited
In the above case, the common silicon diode is connected as shown in the following figure (the dotted line).
However, for the AN77LxxM series, since the protection circuit, which protects the elements from the discharging current, is
Because there is no in-built protection circuit in the AN77LxxM series, they have the drooping characteristics as shown in
In order to secure the stability, the capacitor of 10 μF is required in the output side and it should be added as near to output pin
Figure 1. Protection diode
50
40
30
20
10
0
Figure 2. ESR recommended range
Recommended range
20
Output current I
40
60
V
IN
OUT
80
0.33 μF
(mA)
C
IN
3
100
Input
SFF00080BEB
OUT
V
OUT
flows in the input side, having resulted in the breakage of
2
0
Common
Figure 3. Over current limit control
Not required
1
Output
10 μF
C
OUT
200
I
OUT
(mA)
10