RT8223P
Electrical Characteristics
(VIN = 12V, VEN = VENC = 5V, VENTRIP1 = VENTRIP2 = 2V, No Load, TA = 25°C, unless otherwise specified)
Parameter
Input Supply
Symbol
Test Conditions
Min
Typ
Max
Unit
VIN Standby Current
I
I
V
V
= 6V to 25V, ENTRIPx = GND
= 6V to 25V,
--
--
200
20
--
μA
μA
VIN_SBY
IN
VIN Shutdown Supply
Current
IN
40
VIN_SHDN
ENTRIPx = EN = GND
Both SMPS On, V = 2.1V,
FBx
Quiescent Power
Consumption
P
VIN
SKIPSEL = GND, V
(Note 5)
= 5V, V
= 3.3V
--
5
7
mW
OUT1
OUT2
+P
PVCC
SMPS Output and FB Voltage
DEM Mode
1.975
2
2
2.025
PWM Mode
(Note 6)
--
--
--
--
FBx Voltage
V
V
V
FBx
Ultrasonic Mode
SMPS1, SMPS2
2.032
Output Voltage Adjust
Range
2
--
5.5
--
V
OUTx
V
Discharge
OUTx
V
OUTx
= 0.5V, V
= 0V
ENTRIPx
10
45
mA
Current
On-Time
V
V
V
V
V
V
= 5.05V (200kHz) 1895 2105 2315
OUT1
OUT2
OUT1
OUT2
TONSEL = GND
TONSEL = REF
TONSEL = REG5
= 3.33V (250kHz)
999
1110 1221
= 5.05V (300kHz) 1227 1403 1579
On-Time Pulse Width
Minimum Off-Time
t
t
ns
ON
= 3.33V (375kHz)
= 5.05V (400kHz)
= 3.33V (500kHz)
647
895
475
200
740
833
1052 1209
OUT1
OUT2
555
300
635
400
V
FBx
= 1.9V
ns
OFF
Ultrasonic Mode
Frequency
SKIPSEL = VREG5 or VREG3
Internal Soft-Start
22
33
--
kHz
Soft-Start
Soft-Start Time
Current Sense
t
I
--
2
--
ms
SSx
ENTRIPx Source
Current
ENTRIPx Current
Temperature
Coefficient
V
= 0.9V
9.4
--
10
10.6
--
μA
ENTRIPx
ENTRIPx
TC
In Comparison with 25°C
(Note 6)
4700
ppm/°C
IENTRIPx
ENTRIPx Adjustment
Range
Current Limit
Threshold
Zero-Current
Threshold
V
= I
x R
ENTRIPx
0.515
180
--
--
200
3
3
220
--
V
ENTRIPx
ENTRIPx
GND − PHASEx, V
= 2V
mV
mV
ENTRIPx
GND − PHASEx in DEM
To be continued
www.richtek.com
6
DS8223P-01 June 2011
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
