Document
MIP3550MS
Silicon MOS FET type integrated circuit
Features Expanding the range of input / output High-efficiency and the reduction of coil sound Lower the average noise Protecting function (overload protection, over voltage protection, overheat
protection)
Applications IH rice cooker, air conditioners, air purification system, dehumidifier, washing
machines and fan motor (for refrigerators)
Absolute Maximum Ratings Ta = 25°C±3°C
Parameter
Symbol Rating
DRAIN voltage
VD - 0.3 to +700
VDD voltage
VDD - 0.3 to +8
FB pin voltage
VFB - 0.3 to +6
FB pin current
IFB 500
f pin voltage
Vf - 0.3 to +8
CL pin voltage
VCL - 0.3 to +8
Output peak current *
IDP 3
Channel temperature
Tch 150
Storage temperature
Tstg -55 to +150
Note) *: The guarantee within the following pulse width. Leading edge blanking delay + Current limit delay
Unit V V V mA V V A °C °C
Block Diagram
Package Code
DIP7-A1 Pin Name
1. f 2. VDD 3. CL 4. FB
5. DRAIN 6. 7. SOURCE 8. SOURCE
Marking Symbol: MIP355
Publication date: November 2010
Ver. AEF
1
MIP3550MS
Electrical Characteristics TC = 25°C±3°C
Parameter
Symbol
Conditions
Min Typ Max Unit
Control functions
Output frequency *2
VD = 5 V, VDD = VDD(ON) + 0.1 V, fosc IFB = 30 mA, Vf = VDD, VCL = 0 V,
after dis_OLP
39 43.5 48 kHz
Jitter frequency deviation *2
VD = 5 V, VDD = VDD(ON) + 0.1 V, ∆f IFB = 30 mA, Vf = VDD, VCL = 0 V,
after dis_OLP
1.2 3 4.8 kHz
Jitter frequency modulation rate *1, 2
VD = 5 V, VDD = VDD(ON) + 0.1 V, fM IFB = 30 mA, Vf = VDD, VCL = 0 V,
after dis_OLP
150 Hz
Maximum duty cycle
MAXDC
VD = 5 V, VDD = VDD(ON) + 0.1 V, IFB = 30 mA, Vf = VDD, VCL = 0 V, after dis_OLP
65 70 75 %
VDD start voltage
VDD(ON)
VD = 5 V, IFB = 30 mA, Vf = VDD, VCL = 0 V
5.4 5.9 6.4 V
VDD stop voltage
VDD(OFF)
VD = 5 V, IFB = 30 mA, Vf = VDD, VCL = 0 V
4.4 4.9 5.4 V
VDD start / stop hysteresis
VDD(HYS) VDD(ON) - VDD(OFF)
0.5 1.0 1.5 V
VDD clamp voltage
VDD(CLP) IDD = 10 mA
6.9 7.4 8.9 V
FB threshold current
IFB1
ON → OFF, VD = 5 V, VDD = VDD(ON) + 0.1 V, Vf = VDD, VCL = 0 V
57 97 137 mA
FB hysteresis current
IFB(HYS)
VD = 5 V, VDD = VDD(ON) + 0.1 V, Vf = VDD, VCL = 0 V
2.5 mA
FB pin voltage
VFB1 VFB
VD = 5 V, VDD = VDD(ON) + 0.1 V, IFB = IFB1, Vf = VDD, VCL = 0 V
VD = 5 V, VDD = VDD(ON) + 0.1 V, IFB = 80 mA, Vf = VDD, VCL = 0 V
1.6 1.9 2.2 V 1.5 1.8 2.1 V
Supply current before start-up
IDD(SB)
VD = 5 V, VDD = VDD(ON) - 0.2 V, Vf = VDD, VCL = 0 V, FB: OPEN
170 350 530 mA
Supply current
IDD
VD = 5 V, VDD = VDD(ON) + 0.1 V, IFB = 30 mA, Vf = VDD, VCL = 0 V
250 510 750 mA
Supply current at light load
IDD(OFF)
VD = 5 V, VDD = VDD(ON) + 0.1 V, IFB =IFB1 + 5 mA, Vf = VDD, VCL = 0 V
300
550
800 mA
VDD charging current f pin threshold voltage
Ich1 VDD = 0 V, VD = 40 V, FB, CL, f: OPEN -13.6 -8.5 -4.1 mA
Ich2 VDD = 5 V, VD = 40 V, FB, CL, f: OPEN -8.5 -5.3 -2.1 mA
Vf1
VDD = VDD(ON) + 0.1 V, fosc: foscL → foscH
0.65 1.25 1.85 V
f pin.