ML4812CP Fairchild Semiconductor, ML4812CP Datasheet

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ML4812CP

Manufacturer Part Number
ML4812CP
Description
IC POWER FACTOR CTRLR 16-PDIP
Manufacturer
Fairchild Semiconductor
Datasheet

Specifications of ML4812CP

Mode
Critical Conduction (CRM)
Current - Startup
800µA
Voltage - Supply
12 V ~ 18 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Through Hole
Package / Case
16-DIP (0.300", 7.62mm)
Switching Frequency
105 KHz
Maximum Operating Temperature
+ 150 C
Mounting Style
Through Hole
Minimum Operating Temperature
- 65 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Frequency - Switching
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ML4812CP
Manufacturer:
FAIRCHILD/仙童
Quantity:
20 000
Part Number:
ML4812CP/IP
Manufacturer:
ML
Quantity:
5 510
Part Number:
ML4812CP/IP
Manufacturer:
ST
Quantity:
5 510
Features
Block Diagram
ML4812
Power Factor Controller
16
5
1
2
3
4
6
7
8
OVP
I SENSE
GM OUT
EA OUT
EA–
I SINE
RAMP COMP
C T
R T
(Pin Configuration Shown is for DIP Version)
5V
5V
5V
+
+
GAIN MODULATOR
ERROR
AMP
+
OSC
I EA
S
R
Description
Q
Q
5V
1k
LOCKOUT
VOLTAGE
UNDER
V CC
www.fairchildsemi.com
PWR GND
CLOCK
SHDN
V REF
32V
GND
OUT
V CC
REV. 1.0.4 5/31/01
10
12
11
14
13
15
9

Related parts for ML4812CP

ML4812CP Summary of contents

Page 1

ML4812 Power Factor Controller Features Block Diagram (Pin Configuration Shown is for DIP Version) OVP + 5 – SENSE OUT 2 EA OUT 3 EA– – SINE GAIN MODULATOR 6 RAMP ...

Page 2

ML4812 Pin Configuration ML4812 16-Pin PDIP (P16) I SENSE 1 GM OUT 2 EA OUT 3 EA– 4 OVP 5 I SINE 6 RAMP COMP Top View Pin Description Number Name 1 I Input from the ...

Page 3

ML4812 Absolute Maximum Ratings Supply Current ( Output Current Source or Sink (OUT) DC Output Energy (capacitive load per cycle) Gain Modulator I Input (I ) SINE SINE Error Amp Sink Current (EA OUT) Oscillator Charge Current Analog ...

Page 4

PRODUCT SPECIFICATION Electrical Characteristics Unless otherwise specified 15V , R CC Parameter Oscillator Initial Accuracy Voltage Stability Temperature Stability Total Variation Ramp Valley to Peak R Voltage T Discharge Current (R open) T Clock Out Voltage Low Clock ...

Page 5

ML4812 Electrical Characteristics Unless otherwise specified 15V , R CC Parameter OVP Comparator Input Offset Voltage Hysteresis Input Bias Current Propagation Delay PWM Comparator: I SENSE Input Offset Voltage Input Offset Current Input Common Mode Range Input Bias ...

Page 6

ML4812 Functional Description Oscillator EXTERNAL CLOCK C SYNC SYNC 10 I SET SYNC 8.4mA Q 1 CLOCK t D RAMP PEAK V RAMP VALLEY Figure 1. Oscillator ...

Page 7

PRODUCT SPECIFICATION Output Driver Stage Error Amplifier Gain Modulator 5V 0.5mA + EA– – OUT 3 Figure 4. Error Amplifier Configuration 100 GAIN 0 -20 10 100 1k 10k 100k FREQUENCY (Hz) Figure 5. ...

Page 8

ML4812 Typical Applications Input Inductor (L1) Selection ENABLE V REF V REF GEN. 9V INTERNAL – BIAS + Figure 8. Under-Voltage Lockout Block Diagram Figure 9a. Total Supply Current vs. Supply Voltage ...

Page 9

PRODUCT SPECIFICATION Step 1: Step 2: Step 3: Step 4: REV. 1.0.4 5/31/01 Oscillator Component Selection Step 1: Step 2: Current Sense and Slope (Ramp) Compensation Component Selection ML4812 9 ...

Page 10

ML4812 10 PRODUCT SPECIFICATION Voltage Regulation Components REV. 1.0.4 5/31/01 ...

Page 11

PRODUCT SPECIFICATION Overvoltage Protection (OVP) Components Controller Shutdown Off-line Start-up and Bias Supply Generation Enhancement Circuit Table 1. Toroidal Cores (L1) Material Powdered Iron Powdered Iron Molypermalloy SPANG (Mag. Inc.) REV. 1.0.4 5/31/01 Construction and Layout Tips Magnetics Tips L1 ...

Page 12

ML4812 COPPER FOIL SHORTED TURN Figure 11. Copper Foil Shorted Turn 12 T1 — Sense Transformer Material Size Code N27 R16/6.3 N30 R16/6.3 0.09" GAP PRODUCT SPECIFICATION Part # B64290-K45-X27 B64290-K45-X830 REV. 1.0.4 5/31/01 ...

Page 13

PRODUCT SPECIFICATION Figure 12. Typical Application 200W Power Factor Correction Circuit REV. 1.0.4 5/31/01 ML4812 13 ...

Page 14

... Electrolytic 10µF, 25V Electrolytic 0.47µF, 50V Ceramic 0.002µF, 50V Ceramic 1N5406 (Fairchild) MUR860 (Fairchild) 1N4148 (Fairchild) 5A, 250V 3AG with clips ML4812CP (Fairchild) 2mH (see note) PEAK FQP9N50 (Fairchild) KA7815 (Fairchild) PN2222 (Fairchild) 180k 10k TRIMPOT BOURNS 3299 or equivalent 3 ...

Page 15

PRODUCT SPECIFICATION + Figure 13. 1kW Input Power, Power Factor Correction Circuit REV. 1.0.4 5/31/01 ML4812 15 ...

Page 16

PRODUCT SPECIFICATION Mechanical Dimensions 16 PIN 0.02 MIN (0.50 MIN) 0.055 - 0.065 (4 PLACES) (1.40 - 1.65) 0.170 MAX (4.32 MAX) 0.016 - 0.022 0.125 MIN (0.40 - 0.56) (3.18 MIN) 0.385 - 0.395 (9.78 - ...

Page 17

... ML4812 Ordering Information Part Number ML4812CP ML4812CQ DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; ...

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