Voltage and Current Controller
CYT101
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.
M
D
SO8
DIP8
(8-Pin Plastic DIP)
DESCRIPTION
The
(8-Pin Plastic SOIC)
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.
ORDER INFORMATION
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.
Temperature
Bandgap
Tolerance
ORDER CODE
Range
CYT101AM/D
CYT101M/D
1%
0, +125℃
2.5%
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.
PIN CONFIGURATION
+Vcc
Vfb
1
2
3
Vref
EN
8
7
6
5
APPLICATIONS
+
-
This circuit is designed to be used in battery
chargers with a constant voltage and a limited
output current.
Iref
OUTPUT
Ifb
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
-
+
PIN DESCRIPTION
Pin
Name
I/O
Function
Trimmed Voltage Reference Output 1.24V, 10mA max.
Current source enable input. This current source can be used to
1
2
VREF
EN
O
I
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
3
4
5
IREF
GND
IFB
I
I
I
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.
6
OUTPUT
O
Inverting input of the voltage error amp, The non-inverting input is from VREF
1.24V
,
7
8
VFB
VCC
I
I
Power Supply Input
Preliminary and all contents are subject to change without prior notice.
1
