OZ964
CONFIDENTIAL
OZ964-DS-1.2
Page 2
PIN DESCRIPTION
Names
Pin No.
Description
CTIMR
1
Timing capacitor to provide striking time and timing resistor to provide
shutdown delay time
OVP
2
Voltage feedback
ENA
3
Enable input
SST
4
Timing capacitor to provide Soft-Start Time
VDDA
5
Supply voltage
GNDA
6
Signal ground
REF
7
Reference voltage output
RT1
8
Timing resistor to provide striking frequency
FB
9
Current sense feedback
CMP
10
Voltage control loop compensation
NDR_D
11
N-MOSFET gate drive output
PDR_C
12
P-MOSFET gate drive output
LPWM
13
Low-frequency PWM signal for dimming control
DIM
14
DC voltage input for LPWM duty cycle
LCT
15
Timing capacitor to provide LPWM frequency
PGND
16
Power MOSFET driver ground
RT
17
Timing resistor to provide striking and operating frequency
CT
18
Timing capacitor to provide striking and operating frequency
PDR_A
19
P-MOSFET gate drive output
NDR_B
20
N-MOSFET gate drive output
ABSOLUTE MAXIMUM RATINGS(1)
VDDA
7.0V
GNDA, PGND
+/- 0.3V
Signal inputs
-0.3V to (VDDA +0.3)V
OZ964
OZ964I
Operating Temp.
0
oC to 70oC
-40
oC to +85oC
Operating junction temp.
125
oC
Storage temp.
-55
oC to 150 oC
RECOMMENDED OPERATING RANGE
VDDA
4.6V to 5.5V
fOP- operating frequency
40 kHz to 150kHz
(2)
Resistor connected to RT (RRT)
20 k
Ω to 150 kΩ
Capacitor connected to CT (CCT)
100pF to 470pF
fLF- LPWM frequency
100Hz to 500Hz
Thermal Impedance (
θJ-A)
-
20-pin SSOP
-
20-pin SOIC
80
oC/W
105
oC/W
Note
(1): The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be
guaranteed. The device should not be operated at these limits. The “Functional Specifications” table will
define the conditions for actual device operation. Exposure to absolute maximum rated conditions for
extended periods may affect device reliability.
Note
(2): The frequency of PDR_A, NDR_B, PDR_C, and NDR_D outputs pulses, fOP, is half of fosc value,
fOP =(fosc/2).
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