Voltage and Current Controller
FEATURES
Two ored error amplifiers with built-in current
generator with enable/disable function.
1.24V series voltage reference with trimmed 1%
tolerance (CYT101A).
4.5 to 32V supply voltage range.
5kV ESD protection.
Temperature-compensated.
CYT101
DESCRIPTION
The
CYT101/CYT101A
provide
a
pin-for-pin
replacement of TSM101/A. This is an 8-pin voltage
& current controller incorporates a trimmed series
bandgap voltage reference, two ored error amplifiers
and a current source.
This IC provides a feedback to the primary side of a
power supply by comparing the DC voltage and the
current level at the output to an internal reference.
The controlled current generator can be used to
modify the level of current limitation by offsetting the
information coming from the current sensing
resistor.
The CYT101/A can be used in every types of
application requiring a precision voltage regulation
and current limitation. For example, designers can
save space by using this 8-pin IC for a CC/CV mode
battery charger.
D
DIP8
(8-Pin Plastic DIP)
M
SO8
(8-Pin Plastic SOIC)
ORDER INFORMATION
ORDER CODE
CYT101AM/D
CYT101M/D
0, +125℃
Temperature
Range
Bandgap
Tolerance
1%
2.5%
PIN CONFIGURATION
Vref 1
EN
Iref
2
3
8
7
6
-
+Vcc
Vfb
OUTPUT
Ifb
APPLICATIONS
This circuit is designed to be used in battery
chargers with a constant voltage and a limited
output current.
It can be used in every types of application requiring
a precision voltage regulation and current limitation.
Other application include voltage supervisors, over
voltage protection…
+
-
GND 4
+
5
PIN DESCRIPTION
Pin
1
2
Name
V
REF
EN
I/O
O
I
Function
Trimmed Voltage Reference Output 1.24V, 10mA max.
Current source enable input. This current source can be used to
Offset the voltage measurement on the sense resistor and therefore to modify
the charge current. The current source is enabled when the
Input voltage on pin 2 is lower than 0.8V
Current Limitation Reference Input
Ground
Current Limitation Loop Input, connected to the sense resistor
Output pin common to the voltage regulation and current limitation
Loops.
Inverting input of the voltage error amp, The non-inverting input is from V
REF
,
1.24V
Power Supply Input
3
4
5
6
7
8
I
REF
GND
I
FB
OUTPUT
V
FB
V
CC
I
I
I
O
I
I
Preliminary and all contents are subject to change without prior notice.
1
Voltage and Current Controller
CYT101
Unit
V
mA
V
mA
mW
℃
℃/W
℃
ABSOLUTE MAXIMUM RATINGS
Symbol
V
CC
I
OUT
V
IN
I
IN
P
D
T
J
R
THJ-A
T
STG
Supply Voltage
Output Current
Input Voltage
Input Current
Power Dissipation
Maximum Junction Temperature
Thermal Resistance Junction to Ambient
Storage Temperature
Parameter
Value
36
20
-0.3, V
CC
-1.5
±1
200
150
130 to 200
0 to +125
RECOMMENDED CONDITIONS
Symbol
V
CC
T
OP
Supply Voltage
Operating Free-air Temperature Range
Parameter
Value
4.5 to 32
0 to 125
Unit
V
℃
ELECTRICAL CHARACTERISTICS
The conditions are: T
A
=25℃, V
CC
= 15V unless otherwise stated
Condition Over T
OP
apply over full temperature range (0 to 125℃)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
ERROR AMPLIFIER
I
CC
V
IN
V
IO
I
IB
I
SINK
A
VO
PSRR
CMRR
GBP
I
OH
Total Supply Current
Input Voltage Range
Input Offset Voltage
Input Bias Current
@V
IN
= 1.2V on pin 7 and V
IN
= 0V on pin 5
V
CC
= 15V
0
T
A
=25℃
Over T
OP
T
A
=25℃
Over T
OP
25℃
Over T
OP
R
L
=2ΚΩ, Over T
OP
Over T
OP
Over T
OP
V
CC
= 15V, F = 100kHz
-5
-7
-700
-1000
8
15
65
1
-300
15
2
V
CC
-1.5V
5
7
0
0
mA
V
mV
nA
mA
V/mV
Output Sink Current, V
OL
= 2.5V
Large Signal Voltage Gain
Power Supply Rejection Ratio
Common Mode Rejection Ratio
Gain Bandwidth Product
Output Leakage Current
90
80
1
2
7
dB
dB
MHz
µA
V
I
= 10mV, R
L
= 2κΩ
C
L
= 100pF
25℃
Over T
OP
I
OUT
= 1mA
Over T
OP
1 mA< I
OUT
< 10mA
5V < V
IN
< 32V
1.227
1.21
1.24
1.24
30
5
3.5
VOLTAGE REFERENCE
V
REF
TC
VR
V
LR
V
SR
Reference Voltage
Temperature Stability
Load Regulation
Line Regulation
CYT101A
CYT101
1.252
1.27
100
15
10
V
ppm/℃
mV
mV
Preliminary and all contents are subject to change without prior notice.
2
Voltage and Current Controller
CYT101
ELECTRICAL CHARACTERISTICS (cont’d)
The conditions are: T
A
=25℃, V
CC
= 15V unless otherwise stated
Condition Over T
OP
apply over full temperature range (0℃ to 125℃)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
CURRENT GENERATOR
I
O
TC
CG
I
SR
V
EN
V
IDIS
I
EN
I
LEAK
Current Source
Temperature Stability
Line Regulation
Voltage at EN pin to have I
O
= 1.4mA
Voltage at the EN pin to have I
O
= 0mA
Input Current on the EN pin
Leakage Current
Over T
OP
4.5 < V
CC
< 32V
Over T
OP
Over T
OP
Over T
OP
V
EN
=2V
Over T
OP
2
0.5
30
2
1.4
500
0.003
0.03
0.6
mA
ppm/℃
mA
V
V
µA
µA
PACKAGE MECHANICAL SO8
1
2
D
8
7
6
B1
B
DIM
A
A1
B
B1
C
D
H
E
N
3
4
DIMENSIONS
INCHES
MM
MIN
MAX
MIN
MAX
0.0532 0.0688
0.0040 0.0098
0.0130 0.0200
0.050 BSC
0.0075 0.0098
0.1890 0.1968
0.2284 0.2440
0.1497 0.1574
1.35
1.75
0.10
0.25
0.33
0.51
1.27 BSC
0.19
0.25
4.80
5.00
5.80
6.20
3.80
4.00
5
A1
E
H
A
C
PACKAGE MECHANICAL DIP8
Z
e
1
2
D
8
7
6
5
a
F
A
I
e1
L
B
DIM
A
a
B
b
b1
D
E
e
e1
F
I
L
Z
N
DIMENSIONS
INCHE
MM
MIN
MAX
MIN
MAX
0.131
0.020
0.045 0.065
0.014 0.022
0.008 0.012
0.430
0.313 0.384
0.100
0.300
0.260
0.200
0.125 0.150
0.060
3.32
0.51
1.15
0.356
0.204
1.65
0.55
0.304
10.92
7.95
9.75
2.54
7.62
6.60
5.08
3.18
3.81
1.52
3
4
b
b1
E
Preliminary and all contents are subject to change without prior notice.
3
嵌入式系统
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
