CQ1565RT View Datasheet(PDF) - Fairchild Semiconductor
Part Name
Description
Manufacturer
CQ1565RT Datasheet PDF : 45 Pages
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Electrical Characteristics (Continued)
(TA = 25°C unless otherwise specified)
Parameter
Symbol
Condition
Min. Typ. Max. Unit
Sync Section
Sync Threshold in Normal QR (H)
Sync Threshold in Normal QR (L)
Sync Threshold in Extended QR (H)
Sync Threshold in Extended QR (L)
Extended QR Enable Frequency
Extended QR Disable Frequency
Total Device Section
Operating Supply Current9
VSH1
VSL1
VSH2
VSL2
FSYH
FSYL
VCC = 18V, VFB = 5V
4.2 4.6 5.0 V
2.3 2.6 2.9 V
2.7 3.0 3.3 V
1.6 1.8 2.0 V
– 90 – kHz
– 45 – kHz
- In Normal Operation
IOP
FSCQ0565RT VFB = 5V
FSCQ0765RT
–
4
6 mA
–
4
6
FSCQ0965RT
–
6
8
FSCQ1265RT
–
6
8
FSCQ1465RT
–
7
9
FSCQ1565RT
–
7
9
FSCQ1565RP
–
7
9
- In Burst Mode (Non-switching)
Startup Current
Sustain Latch Current11
Current Sense Section
Maximum Current Limit10
IOB
ISTART
ISN
VFB = GND
VCC = VSTART – 0.1V
VCC = VSTOP – 0.1V
ILIM
FSCQ0565RT VCC = 18V, VFB = 5V
FSCQ0765RT
– 0.25 0.50 mA
– 25 50 µA
– 50 100 µA
3.08 3.5 3.92 A
4.4 5 5.6
FSCQ0965RT
5.28 6.0 6.72
FSCQ1265RT
6.16 7 7.84
FSCQ1465RT
7.04 8.0 8.96
FSCQ1565RT
7.04 8 8.96
FSCQ1565RP
10.12 11.5 12.88
Burst Peak Current
IBUR(pk) FSCQ0565RT VCC = 18V, VFB = Pulse 0.45 0.65 0.85 A
FSCQ0765RT
0.65 0.9 1.15
FSCQ0965RT
0.6 0.9 1.2
FSCQ1265RT
0.8 1.2 1.6
FSCQ1465RT
0.6 0.9 1.2
FSCQ1565RT
–
1
–
FSCQ1565RP
–
1
–
Notes:
9. This parameter is the current flowing in the control IC.
10. These parameters indicate inductor current.
11. These parameters, although guaranteed, are tested only in EDS (wafer test) process.
9
FSCQ-Series Rev. 1.1.2
www.fairchildsemi.com
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