Preliminary
Typical Operating Characteristics
RT9166/A
Power Supply Rejection Ratio
Dropout Voltage vs. Load Current
700
600
500
400
300
200
100
0
0
-10
-20
-30
-40
-50
-60
CIN = 1uF
COUT = 1uF
VIN = 5V
CIN = 1uF
COUT = 1uF
TJ = 125°C
TJ = 25°C
100mA
TJ = −40°C
1mA
10
100
1k
10k
100k
1M
0
100
200
300
400
500
600
Frequency (Hz)
Load Current (mA)
Output Noise
Region of Stable COUT ESR vs. Load Current
100.00
I
LOAD = 100mA
COUT = 1uF
VIN = 5V
CIN = 1uF
COUT = 1uF to 4.7uF
10.00
1.00
0.10
0.01
0.00
400
Instable
200
0
Stable
-200
-400
Instable
f = 10Hz to 100KHz
Time (1ms/DIV)
0
100
200
300
400
500
600
Load Current (mA)
Current Limit vs. Input voltage
Current Limit vs. Input voltage
900
850
800
750
700
900
850
800
750
700
VIN = 5V
CIN = 1uF
VIN = 5V
CIN = 1uF
COUT = 1uF
RL = 0.5Ω
COUT = 1uF
RL = 0.5Ω
RT9166-33CX
5.5
RT9166-33CVL
3
3.5
4
4.5
5
3
3.5
4
4.5
5
5.5
Input voltage (V)
Input voltage (V)
DS9166/A-09 October 2004
www.richtek.com
5
ETC [ ETC ]
