Electrical Characteristic
V
CC
= 5.0V, T
A
= 25°C, unless otherwise specified.
Symbol
Current Monitor Loop
V
TH
H
ys
Threshold Voltage of Turning Red Pin from Low to High
Hysterisis of the comparator in Current Monitor Loop
20
14
mV
mV
Parameter
Conditions
Min
Typ
Max
Unit
1. If the voltage on V
CTRL
(the negative input of the amplifier) is higher than the positive amplifier input
(V
REF
=1.210V), and it is increased by 1mV, the sinking current at the output OUT will be increased by 2.4mA.
2. The internal Voltage Reference is set at 1.210V. The internal Voltage Reference is fixed by bandgap, and
trimmed to 1% accuracy at room temperature.
3. When the positive input at I
CTRL
is lower than -200mV, and the voltage is decreased by 1mV, the sinking current
at the output OUT will be increased by 2.9mA.
4. The internal current sense threshold is set to -200mV. The current control loop precision takes into account the
cumulative effects of the internal voltage reference deviation as well as the input offset voltage of the
trans-conduction operational amplifier.
Revision 5/7/2009
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 3
SEAWARD [ Seaward Electronics Inc. ]
