TK717xxS
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
Ripple Rejection
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
0.1
1
10
100
FREQUENCY (kHz)
1000
CL = 2.2
µF
CL = 0.22
µF
TANTALUM CAPACITOR
0
-10
MULTILAYER CERAMIC CAPACITOR
Conditions:
V
IN
= 5.0 V
V
OUT
= 3.0 V
I
OUT
= 10 mA
V
RIPPLE
= 500 mVp-p
f = 100 Hz TO 1 MHz
C
IN
= 0 pF
C
N
= 0.01
mF
-20
CL = 0.22
µF
RR (dB)
RR (dB)
-30
-40
-50
-60
-70
-80
-90
CL = 2.2
µF
-100
0.1
1
10
100
FREQUENCY (kHz)
1000
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.
0
-10
-20
-30
RR (dB)
RIPPLE REJECTION vs. IOUT
CN = 0.01
µF
CL = 0.22
µF
(Ceramic)
VIN = 5.0 V
VRIPPLE = 500 mVp-p
RR AT LOW VOLTAGE
0
-10
-20
-30
RR (dB)
CN = 0.01
µF
CL = 0.22
µF
(CERAMIC)
IOUT: 1, 50, 100, 150,
200 mA
IOUT = 200mA
-40
-50
-60
-70
-80
-90
Freq = 400 Hz
Freq = 1 kHz
-40
-50
-60
-70
-80
-90
IOUT = 1mA
VIN = VOUT
-100
0
25
50 75 100 125 150 175 200
IOUT (mA)
-100
+0.2 +0.4 +0.6 +0.8
VIN - VOUT _ (TYP) (V)
+1
DROP OUT VOLTAGE
0
-50
-100
MAXIMUM OUTPUT CURRENT
5.0
4.0
VDROP (mV)
VOUT (V)
-150
-200
-250
3.0
2.0
1.0
-300
-350
0
50
100 150 200
IOUT (mA)
250
300
0.0
0
100
200
300
IOUT (mA)
400
500
Page 6
October 2001 TOKO, Inc.
TOKO [ TOKO, INC ]
