iW1688
Low-Power Off-line Digital PWM Controller
6.0 Electrical Characteristics
VCC = 12 V, -40°C ≤ TA ≤ 85°C, unless otherwise specified (Note 1)
Parameter
Symbol Test Conditions
Min
Typ
Max
Unit
VIN SECTION (Pin 5)
Start-up voltage threshold
Start-up current
VINST
IIN(ST)
TA= 25°C, positive edge
VCC = 10 V
366
407
8
448
15
mV
µA
mV
V
VUVDC
VOVDC
ZIN
Shutdown low voltage threshold
Shutdown high voltage threshold
Input impedance
TA= 25°C, negative edge
TA= 25°C, positive edge
After start-up
243
270
1.906
25
297
1.715
2.097
kΩ
VSENSE SECTION (Pin 1)
Input leakage current
IBVS
VSENSE = 2 V
1
μA
V
TA=25°C, negative edge
(note 2)
Nominal voltage threshold
Output OVP threshold
VSENSE(NOM)
1.507
1.96
1.538
2.00
1.569
TA=25°C, negative edge
(note 2)
VSENSE(MAX)
2.04
V
OUTPUT SECTION (Pin 3)
Output low level ON-resistance
Output high level ON-resistance
RDS(ON)LO
RDSON)HI
Ω
Ω
ISINK = 20 mA
65
65
100
100
ISOURCE = 20 mA
TA = 25°C, CL = 330 pF
10% to 90%
Rise time (Note 3)
Fall time (Note 3)
tR
40
75
ns
TA = 25°C, CL = 330 pF
90% to 10%
tF
fS
40
40
75
44
ns
Output switching frequency (Note 4)
VCC SECTION (Pin 4)
ILOAD > 15% of maximum
36
kHz
VCC(MAX)
VCC(ST)
VCC(UVL)
ICCQ
Maximum operating voltage
Start-up threshold
16
13
6.5
3
V
V
VCC rising
11
12
6
Undervoltage lockout threshold
Operating current
VCC falling
CL = 330 pF
5.5
V
2
mA
Notes:
Note 1. Adjust VCC above the start-up threshold before setting at 12V.
Note 2. Measured at full reset point, for which the tranformer currents are zero.
Note 3. These parameters are not 100% tested, guaranteed by design and characterization.
Note 4. Frequency variation includes ±1.2% dithering for EMI suppression.
MK-4AA003-E
03/16/06
PAGE 3
PRELIMINARY
ETC [ ETC ]
