MAX1856EUB+ Maxim Integrated Products, MAX1856EUB+ Datasheet - Page 16

• Manufacturer Part Number: MAX1856EUB+
• Description: IC PS PWM SLIC SYNCH 10-UMAX
• Manufacturer: Maxim Integrated Products

Specifications of MAX1856EUB+

• Pwm Type: Current Mode
• Number Of Outputs: 1
• Frequency - Max: 575kHz
• Duty Cycle: 94%
• Voltage - Supply: 3 V ~ 28 V
• Buck: No
• Boost: No
• Flyback: Yes
• Inverting: Yes
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Frequency-max: 575kHz
• Output Voltage: 0 V to - 185 V
• Output Current: 0.3 A
• Input Voltage: 3 V to 28 V
• Switching Frequency: 500 KHz
• Mounting Style: SMD/SMT
• Duty Cycle (max): 94 %
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Wide Input Range, Synchronizable,
PWM SLIC Power Supply
Figure 4. -48V Output Application Circuit
16
______________________________________________________________________________________
4.5V TO 24V
INPUT
200kΩ
C
1µF
1µF
R
10Ω
LDO
C4
OSC
R5
10
1
2
7
9
3
LDO
FREQ
GND
PGND
V
SYNC/SHDN
CC
MAX1856
(2x) 10µF
EXT
REF
CS
FB
25V
C
8
6
5
4
IN
C5
1nF
R3
8.66kΩ
C
2.2µF
100Ω
REF
R6
1
D1: Central Semiconductor CMR1U-02
M1: International Rectifier IRLL2705
T1: ICE Components ICA-0635
M1
R
33mΩ
T1
CS
C
1nF
FB
4
332kΩ
R1
D1
R4
220Ω
C3
330pF
OUTPUT
-48V
C1
100µF
Sanyo
100MV100AX