
Page 6
October 2001 TOKO, Inc.
TK717xxS
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
The ripple rejection characteristic depends on the characteristic and the capacitance value of the capacitor connected to
the output side. The RR characteristic of 50 kHz or more varies greatly with the capacitor on the output side and the PCB.
Please confirm your expectations with your actual design, if necessary.
Ripple Rejection
Conditions:
V
IN
= 5.0 V
V
OUT
= 3.0 V
I
OUT
= 10 mA
V
= 500 mVp-p
f = 100 Hz TO 1 MHz
C
IN
= 0 pF
C
N
= 0.01 F
R
IOUT (mA)
0 25 50 75 100 125 150 175 200
-10
-20
-30
-40
-50
-60
-70
-80
-90
RIPPLE REJECTION vs. IOUT
0
-100
CN = 0.01
μ
F
CL = 0.22
μ
F (Ceramic)
VIN = 5.0 V
VRIPPLE = 500 mVp-p
Freq = 1 kHz
Freq = 400 Hz
V
IOUT (mA)
0 100 200 300 400 500
4.0
3.0
2.0
MAXIMUM OUTPUT CURRENT
5.0
1.0
0.0
R
VIN - VOUT _ (TYP) (V)
+0.2 +0.4 +0.6 +0.8 +1
-10
-20
-30
-40
-50
-60
-70
-80
-90
RR AT LOW VOLTAGE
0
-100
CN = 0.01
μ
F
CL = 0.22
μ
F (CERAMIC)
IOUT: 1, 50, 100, 150,
200 mA
IOUT = 200mA
IOUT = 1mA
VIN = VOUT
V
IOUT (mA)
0 50 100 150 200 250 300
-50
-100
-150
DROP OUT VOLTAGE
0
-300
-350
-200
-250
TANTALUM CAPACITOR
0.1 1 10 100 1000
FREQUENCY (kHz)
0
-50
-80
-100
-10
-20
-30
-40
-60
-70
-90
CL = 0.22
μ
F
CL = 2.2
μ
F
R
MULTILAYER CERAMIC CAPACITOR
0.1 1 10 100 1000
FREQUENCY (kHz)
0
-50
-80
-90
-100
-10
-20
-30
-40
-60
-70
CL = 0.22
μ
F
CL = 2.2
μ
F
R