CM2830AAIM89 CHAMP [Champion Microelectronic Corp.], CM2830AAIM89 Datasheet - Page 9

• Manufacturer Part Number: CM2830AAIM89
• Description: 300mA CMOS LDO
• Manufacturer: CHAMP [Champion Microelectronic Corp.]

ELECTRICAL CHARACTERISTICS
T
Note 1. V
DETAILED DESCRIPTION
The CM2830/CM2830A family of CMOS regulators contain a PMOS pass transistor, voltage reference, error amplifier,
over-current protection, thermal shutdown, and short circuit protection.
The P-channel pass transistor receives data from the error amplifier, over-current shutdown, short output protection, and thermal
protection circuits. During normal operation, the error amplifier compares the output voltage to a precision reference. Over-current
and Thermal shutdown circuits become active when the junction temperature exceeds 150℃, or the current exceeds 300mA.
During thermal shutdown, the output voltage remains low. Normal operation is restored when the junction temperature drops
below 120℃.
The CM2830/CM2830A switches from voltage mode to current mode when the load exceeds the rated output current. This
prevents over-stress. The CM2830 also incorporates current fold-back to reduce power dissipation when the output is
short-circuited. This feature becomes active when the output drops below 1.05V, and reduces the current flow by 65%. Full
current is restored when the voltage exceeds 1.05V.
EXTERNAL CAPACITOR
The CM2830/2830A is stable with an output capacitor to ground of 2.2
ESR capacitors. A second capacitor is recommended between the input and ground to stabilize VIN. The input capacitor should
be larger than 0.1
termination is desirable.
2004/04/30
Over Temperature Hysteresis
Over Temperature Shutdown
Output Voltage Temp. Coeff.
A
Output Voltage Accuracy
= +25℃; unless otherwise noted
Power Supply Rejection
Short Circuit Current
Ground Pin Current
Quiescent Current
Load Regulation
Dropout Voltage
Line Regulation
Output Current
Input Voltage
Output Noise
Current Limit
IN(MIN)
Parameter
Rev. 1.6
= V
OUT
µ
+ V
F to have a beneficial effect. All capacitors should be placed in close proximity to the pins. A “quiet” ground
DROPOUT
V
I
OUT
I
OUT
C
OUT
F=10Hz to 100kHz, C
O
I
=5mA, V
O
=2.2
=V
=5mA, V
I
= 300mA,
O
O(NOM)
= 100mA
µ
Champion Microelectronic Corporation
F ceramic
IN
-1.5%,
IN
=V
I = 1mA to 300mA
=V
I
Test Conditions
V
o
=1mA to 300mA
IN
OUT
V
OUT
V
=5V, No Load
V
OUT
OUT
I
o
OUT
+1 to V
+1 to V
= 1mA
< 1.05V
> 1.2V
>1.2V
O
1.2V<V
2.0V<V
=2.2
OUT
OUT
2.5V<V
µ
+2, V
+2, V
f=100KHz
F, I
O(NOM)
O(NOM)
f=10KHz
f=1KHz
O
OUT
O(NOM)
OUT
= 10mA
<=2.0V
<=2.5V
µ
<= 3.0V
> 3.0V
F or greater. It can keep stable even with higher or poor
Note 1
-0.15
Min.
-1.5
300
300
-0.3
-1
CM2830/CM2830A
CM2830/CM2830A
300mA CMOS LDO
Typ.
0.03
0.06
150
450
150
0.2
30
30
60
50
40
30
30
25
Max.
1300
0.15
800
300
300
1.5
0.3
35
35
7
1
Page 9
ppm/℃
Unit
mV
mA
mA
mA
µ
µ
dB
µ
℃
℃
%
%
%
V
A
A
Vrms