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MC44604 High Safety Standby Ladder Mode GreenLineTM PWM Controller
The MC44604 is an enhanced high performance controller that is specifically designed for off-line and dc-to-dc converter applications. The MC44604 is a modification of the MC44603. The MC44604 offers enhanced safety and reliable power management in its protection features (foldback, overvoltage detection, soft-start, accurate demagnetization detection). Its high current totem pole output is also ideally suited for driving a power MOSFET but can also be used for driving a bipolar transistor in low power converters (< 150 W). In addition, the MC44604 offers a new efficient way to reduce the standby operating power by means of a patented standby ladder mode operation of the converter significantly reducing the converter consumption in standby mode. Current or Voltage Mode Controller
HIGH SAFETY STANDBY LADDER MODE GREENLINETM PWM CONTROLLER
SEMICONDUCTOR TECHNICAL DATA
* * * * * * * * * * * * * * * * * *
Operation Up to 250 kHz Output Switching Frequency Inherent Feed Forward Compensation Latching PWM for Cycle-by-Cycle Current Limiting Oscillator with Precise Frequency Control
P SUFFIX PLASTIC PACKAGE CASE 648
16 1
High Flexibility Externally Programmable Reference Current Secondary or Primary Sensing High Current Totem Pole Output Undervoltage Lockout with Hysteresis
Safety/Protection Features Overvoltage Protection Facility Against Open Loop Protection Against Short Circuit on Oscillator Pin Fully Programmable Foldback Soft-Start Feature Accurate Maximum Duty Cycle Setting Demagnetization (Zero Current Detection) Protection Internally Trimmed Reference
PIN CONNECTIONS
VCC VC Output Gnd Foldback Input Overvoltage Protection Current Sense Input Demagnetization Detection Input
1 2 3 4 5 6 7 8 (Top View)
16 Rref 15 Standby Management 14 Error Amp Input 13 Error Amp Output 12 Clamp Error Amp Input
max 11 Votlage Mode CT 10 Soft-Start/D /
GreenLineTM Controller: Low Startup and Operating Current Patented Standby Ladder Mode for Low Standby Losses Low dV/dT for Low EMI
9 Standby
Current Set
ORDERING INFORMATION
GreenLine is a trademark of Motorola, Inc. Device MC44604P Operating Temperature Range TA = -25 to +85C Package Plastic DIP
(c) Motorola, Inc. 1999
Issue 1
MOTOROLA ANALOG IC DEVICE DATA
1
MC44604
OUTLINE DIMENSIONS
P SUFFIX PLASTIC PACKAGE CASE 648-08 ISSUE R
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION L TO CENTER OF LEADS WHEN FORMED PARALLEL. 4. DIMENSION B DOES NOT INCLUDE MOLD FLASH. 5. ROUNDED CORNERS OPTIONAL. DIM A B C D F G H J K L M S INCHES MIN MAX 0.740 0.770 0.250 0.270 0.145 0.175 0.015 0.021 0.040 0.70 0.100 BSC 0.050 BSC 0.008 0.015 0.110 0.130 0.295 0.305 0_ 10 _ 0.020 0.040 MILLIMETERS MIN MAX 18.80 19.55 6.35 6.85 3.69 4.44 0.39 0.53 1.02 1.77 2.54 BSC 1.27 BSC 0.21 0.38 2.80 3.30 7.50 7.74 0_ 10 _ 0.51 1.01
-A-
16 9
B
1 8
F S
C
L
-T- H G D
16 PL
SEATING PLANE
K
J TA
M
M
0.25 (0.010)
M
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. "Typical" parameters which may be provided in Motorola data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer. Mfax is a trademark of Motorola, Inc. How to reach us: USA / EUROPE / Locations Not Listed: Motorola Literature Distribution; P.O. Box 5405, Denver, Colorado 80217. 1-303-675-2140 or 1-800-441-2447 Customer Focus Center: 1-800-521-6274 MfaxTM: RMFAX0@email.sps.mot.com - TOUCHTONE 1-602-244-6609 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; Silicon Harbour Centre, Motorola Fax Back System - US & Canada ONLY 1-800-774-1848 2, Dai King Street, Tai Po Industrial Estate, Tai Po, N.T., Hong Kong. - http://sps.motorola.com/mfax/ 852-26629298 HOME PAGE: http://motorola.com/sps/ JAPAN: Motorola Japan Ltd.; SPD, Strategic Planning Office, 141, 4-32-1 Nishi-Gotanda, Shinagawa-ku, Tokyo, Japan. 81-3-5487-8488
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MOTOROLA ANALOG IC DEVICE DATA MC44604/D

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