LTC3035_15 Datasheet, PDF (4/12 Pages) Linear Technology – 300mA VLDO Linear Regulator with Charge Pump Bias Generator

LTC3035
TYPICAL PERFOR A CE CHARACTERISTICS
BIAS Voltage vs Input Voltage
6
SHDN Threshold (Rising)
vs Temperature
1000
SHDN Threshold (Falling)
vs Temperature
1000
5
900
900
V_IN = 5.5V
V_IN = 5.5V
4
800
800
V_IN = 3.6V
V_IN = 3.6V
3
700
700
V_IN = 1.7V
V_IN = 1.7V
2
600
600
1
500
500
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6
V_IN (V)
3035 G07
400
–45 –20
5 30 55 80
TEMPERATURE (°C)
105 130
3035 G08
400
–45 –20
5 30 55 80
TEMPERATURE (°C)
105 130
3035 G09
Current Limit vs Input Voltage
900
V_OUT = 0V
800
700
600
500
400
300
200
100
0
1.5 2 2.5 3 3.5 4 4.5 5 5.5
V_IN (V)
3035 G10
V_IN Ripple Rejection vs Frequency
70
60
50
C_OUT = 10µF
40
30
C_OUT = 1µF
20
10
V_IN = 3.6V
V_OUT = 3.3V
I_OUT = 100mA
0
100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
3035 G13
Transient Response
BIAS Output Ripple
V_OUT
20mV/DIV
AC
300mA
I_OUT
10mA
V_IN = 3.6V
V_OUT = 3.3V
C_OUT = 1µF
200µs/DIV
3035 G11
V_BIAS
50mV/DIV
AC
V_OUT
5mV/DIV
AC
V_IN = 3.6V
V_OUT = 3.3V
C_BST = 1µF
C_FLY = 0.1µF
C_OUT = 1µF
I_OUT = 1mA
500µs/DIV
3035 G12
3035f
4