MB39A108 Datasheet PDF – 5-Channel DC/DC Converter IC
5-Channel DC / DC Converter IC with Synchronous Rectification
MB39A108 overview
The MB39A108 is a 5-Channel DC / DC Converter IC with Synchronous Rectification, supplied in a TSSOP 38 Pin Type package. The absolute maximum ratings table on this page lists the 5 limits from the manufacturer's datasheet that must not be exceeded. This page brings together the MB39A108 pinout and maximum ratings, with the full datasheet PDF to preview below or download.
The MB39A108 is 5-channel DC/DC converter IC using pulse width modulation (PWM), and is suitable for up conversion, down conversion, and up/down conversion. The MB39A108 is built in 5 channels into TSSOP-38P/ BCC-40P package and operates at 2 MHz maximum. Each channel can be controlled with soft-start.
The MB39A108 is suitable for power supply of high performance portable instruments such as DSC.
Datasheet
MB39A108 features
- Supports for down-conversion with synchronous rectification
- (CH1) Supports for down-conversion and up/down Zeta conversion (CH2, CH3)
- Supports for up-conversion and up/down Sepic conversion (CH4, CH5)
- Low voltage start-up (CH4, CH5) : 1.7 V
- Power supply voltage range : 2.5 V to 11V
- Reference voltage : 2.0 V ± 1%
- Error amplifier threshold voltage : 1.00 V ± 1% (CH1), 1.23 V ± 1% (CH2 to CH5)
- Oscillation frequency range : 200 kHz to 2.0 MHz
- Standby current : 0 mA (Typ)
- Built-in soft-start circuit independent of loads
- Built-in totem-pole type output for MOS FET
- Short-circuit detection capability by external signal ( - INS terminal)
- Two types of package (TSSOP-38 pin : 1 type, BCC-40 pin : 1 type)
MB39A108 pinout
| Pin | Name | Description |
|---|---|---|
| 36 | 33 | O |
| 34 | INE1 | Error amplifier inverted input terminal. |
| 35 | CS1 | Soft-start setting capacitor connection terminal. |
| 31 | OUT1-1 | P-ch drive output terminal (External main side FET gate driving). |
| 30 | OUT1-2 | N-ch drive output terminal (External synchronous rectification side FET gate driving). |
| 4 | 40 | I |
| 39 | FB2 | Error amplifier output terminal |
| 38 | INE2 | Error amplifier inverted input terminal. |
| 37 | CS2 | Soft-start setting capacitor connection terminal. |
| 29 | OUT2 | P-ch drive output terminal. |
| 16 | 12 | I |
| 13 | FB3 | Error amplifier output terminal |
| 14 | INE3 | Error amplifier inverted input terminal. |
| 15 | CS3 | Soft-start setting capacitor connection terminal. |
| 28 | OUT3 | P-ch drive output terminal. |
| 23 | 20 | I |
| 19 | FB4 | Error amplifier output terminal. |
| 18 | INE4 | Error amplifier inverted input terminal. |
| 17 | CS4 | Soft-start setting capacitor connection terminal. |
| 27 | OUT4 | N-ch drive output terminal. |
| 24 | 21 | I |
| 22 | FB5 | Error amplifier output terminal. |
| 23 | INE5 | Error amplifier inverted input terminal. |
| 24 | CS5 | Soft-start setting capacitor connection terminal. |
Show all 27 pins
| Pin | Name | Description |
|---|---|---|
| 26 | OUT5 | N-ch drive output terminal. |
| 13 | 9 | ¾ |
| 8 | RT | Triangular wave frequency setting resistor connection terminal. |
Absolute maximum ratings
| Parameter | Symbol | Value | Unit | Conditions |
|---|---|---|---|---|
| Power supply voltage | VCC | ¾ | 12 | VCC, VCCO terminal |
| Output current | IO | ¾ | 20 | OUT1 to OUT5 terminal |
| Peak output current | IOP | ¾ | 400 | OUT1 to OUT5 terminal Duty £ 5% (t = 1/fosc ´ Duty) |
| Power dissipation | PD | ¾ | 1680*1 | Ta £ + 25 °C (TSSOP-38P) |
| Storage temperature | TSTG | - 55 | + 125 | ¾ |
MB39A108 applications
- Digital still camera (DSC)
- Digital video camera (DVC)
- Surveillance camera Etc
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