AMG-LM302 Datasheet, PDF (8/23 Pages) alpha microelectronics gmbh – Ballast Controller for Metal Halide Lamps

PIN Symbol
#
1 nc
2 comp
3 AGNDH
4 ISET
5 RMp
6 Rtd
7 Rtu
8 COP
9 Flag
10 act
11 AGNDR
12 nc
13 nc
14 nc
15 EN
16 V5V
17 VS
18 V15V
19 DRV
20 nc
21 PGND
22 SUB
23 PWMp
24 nc
25 nc
26 CS
27 ZCD
28 Pi
AMG-LM302
Ballast Controller for Metal Halide Lamps
Description
Frequency compensation output of the CDM error amplifier
Ground connection for analog circuitry in the CDM part
Adjust bias current with 500kOhm to AGNDH
Adjust steady state lamp current with resistor to AGNDH
Setting upper voltage threshold for lamp power in the steady-state
mode (<180V) with a resistor to AGNDH
Setting lower voltage threshold for lamp power in the steady-state
mode (>50V) with a resistor to AGNDH
A capacitor from COP to AGNDH together with ISET determines the
PWM and bridge frequency
Indication of CDM-lamp state
- Flag = high impedance => standy or low power mode
- Flag = low => start up phase
- Flag changes between high and low impedance => ignition phase
Connection with V5V activates the power MOS driver, connection with
PGND or open deactivates the power MOS driver
Ground connection for analog circuitry in the PFC part
A high level enables the IC and starts operation
a low level puts the IC into standby (reduced power consumption)
Internally generated 5V power supply for analog and digital stages,
may also feed external devices
Main supply for the IC, input voltage range 14.5V to 35V
Internally generated 15V power supply for PFC and CDM drivers, may
feed external devices
PFC power MOS Driver output
Driver Ground
Substrate, connect to PGND
Additional power MOS driver supplied with V15V,
activated when pin “act” is connected to V5V
Current sense = peak current detection of PFC
Zero current sense input for PFC inductor
Mains voltage phase sense input
AMG-LM302 Revision: A
29. Jul. 2010 © All rights reserved Page 8 of 23