BD9489F Datasheet, PDF (2/39 Pages) Rohm – DCDC converter with current mode

BD9489F
1.4 Absolute Maximum Ratings (Ta=25°C)
Parameter
Power Supply Voltage
SS, RT, ISENSE, FB, CS, CP,
REG58, DIMOUT, GATE
Terminal Voltage
OVP, UVLO, PWM, ADIM, STB
Terminal Voltage
Symbol
Vccmax
SS, RT, ISENSE, FB, CS,
CP, REG58, DIMOUT,
GATE
OVP, UVLO, PWM,
ADIM, STB
Ratings
36
7
20
Power Dissipation
Pd
0.62 (*1)
Operating Temperature Range
Topr
-40 to +85
Junction Temperature
Tjmax
150
Storage Temperature Range
Tstg
-55 to +150
*1 In the case of mounting 1 layer glass epoxy base-plate of 70mm×70mm×1.6mm,
derate by 5.0mW/°C when operating above Ta=25°C.
1.5 Operating Ratings
Parameter
Power Supply Voltage
DC/DC Oscillation Frequency
Effective Range of ADIM Signal
PWM Input Frequency
Symbol
VCC
fsw
VADIM
FPWM
Range
9.0 to 35.0
50 to 800
0.2 to 3.0
90 to 2000
Datasheet
Unit
V
V
V
W
°C
°C
°C
Unit
V
kHz
V
Hz
1.6 Pin Configuration
1 VCC
2 STB
3 OVP
4 UVLO
5 SS
6 PWM
7 _CP
8 _ADIM
REG58 16
CS 15
GATE 14
DIMOUT 13
GND ¹²
ISENSE ¹¹
FB ¹⁰
RT ⁹
1.7 Physical Dimension Tape and Marking Diagram
Figure 3. Pin Configuration
Figure 4. Physical Dimension Tape and Marking Diagram
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TSZ02201-0F1F0C100250-1-2
29.Oct 2014 Rev.002