ETC2 CYT101AM/D Voltage and current controller Datasheet

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
SO8
D
DIP8
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.
ORDER INFORMATION
ORDER CODE
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…
Temperature
Range
Bandgap
Tolerance
CYT101AM/D
CYT101M/D
1%
0, +125℃
2.5%
PIN CONFIGURATION
Vref 1
EN
APPLICATIONS
(8-Pin Plastic SOIC)
(8-Pin Plastic DIP)
Iref
2
+
-
3
GND 4
-
+
8
+Vcc
7
Vfb
6
OUTPUT
5
Ifb
PIN DESCRIPTION
Pin
Name
I/O
Function
1
2
VREF
EN
O
I
3
IREF
I
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
4
GND
I
Ground
5
IFB
I
6
OUTPUT
O
7
VFB
I
8
VCC
I
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 VREF,
1.24V
Power Supply Input
Preliminary and all contents are subject to change without prior notice.
1
Voltage and Current Controller
CYT101
ABSOLUTE MAXIMUM RATINGS
Symbol
VCC
Parameter
Supply Voltage
Value
Unit
36
V
IOUT
Output Current
20
mA
VIN
Input Voltage
-0.3, VCC -1.5
V
IIN
Input Current
±1
mA
PD
Power Dissipation
200
mW
TJ
Maximum Junction Temperature
150
℃
Thermal Resistance Junction to Ambient
130 to 200
℃/W
Storage Temperature
0 to +125
℃
RTHJ-A
TSTG
RECOMMENDED CONDITIONS
Symbol
Value
Unit
VCC
Supply Voltage
Parameter
4.5 to 32
V
TOP
Operating Free-air Temperature Range
0 to 125
℃
ELECTRICAL CHARACTERISTICS
The conditions are: TA =25℃, VCC = 15V unless otherwise stated
Condition Over TOP apply over full temperature range (0 to 125℃)
Parameter
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
mA
V
1
2
VCC
-1.5V
5
7
0
0
ERROR AMPLIFIER
ICC
VIN
Total Supply Current
Input Voltage Range
VCC = 15V
VIO
Input Offset Voltage
IIB
Input Bias Current
TA =25℃
Over TOP
TA =25℃
Over TOP
25℃
Over TOP
RL =2ΚΩ, Over TOP
-5
-7
-700
-1000
65
0
@VIN = 1.2V on pin 7 and VIN = 0V on pin 5
ISINK
AVO
Output Sink Current, VOL = 2.5V
Large Signal Voltage Gain
PSRR
Power Supply Rejection Ratio
Over TOP
CMRR
GBP
Common Mode Rejection Ratio
Gain Bandwidth Product
Over TOP
-300
15
mV
nA
mA
8
15
VCC = 15V, F = 100kHz
V/mV
90
dB
80
1
dB
MHz
VI = 10mV, RL = 2κΩ
CL = 100pF
IOH
Output Leakage Current
2
7
µA
1.24
1.24
30
1.252
1.27
100
V
ppm/℃
25℃
Over TOP
VOLTAGE REFERENCE
VREF
TCVR
Reference Voltage
Temperature Stability
CYT101A
CYT101
IOUT = 1mA
Over TOP
1.227
1.21
VLR
Load Regulation
1 mA< IOUT < 10mA
5
15
mV
VSR
Line Regulation
5V < VIN < 32V
3.5
10
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: TA =25℃, VCC = 15V unless otherwise stated
Condition Over TOP apply over full temperature range (0℃ to 125℃)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
CURRENT GENERATOR
IO
Current Source
TCCG
1.4
mA
Over TOP
500
ppm/℃
4.5 < VCC < 32V
0.003
Temperature Stability
ISR
Line Regulation
VEN
Voltage at EN pin to have IO = 1.4mA
Over TOP
VIDIS
Voltage at the EN pin to have IO = 0mA
Over TOP
IEN
ILEAK
Input Current on the EN pin
Leakage Current
Over TOP
VEN =2V
Over TOP
0.03
mA
0.6
V
2
V
0.5
30
2
µA
µA
PACKAGE MECHANICAL SO8
1
8
2
7
3
6
B
N
DIM
D
A
A1
B
B1
C
D
H
E
B1
5
4
A1
A
E
H
C
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
PACKAGE MECHANICAL DIP8
Z
e
1
8
2
7
3
6
4
5
N
B
DIM
D
b
a
A
F
I
e1
b1
E
L
A
a
B
b
b1
D
E
e
e1
F
I
L
Z
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
1.65
0.356
0.55
0.204
0.304
10.92
7.95
9.75
2.54
7.62
6.60
5.08
3.18
3.81
1.52
Preliminary and all contents are subject to change without prior notice.
3
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