MC33997DW Freescale Semiconductor, MC33997DW Datasheet - Page 2

• Manufacturer Part Number: MC33997DW
• Description: IC SWITCH 3.3/5V SUPPLY 24-SOIC
• Manufacturer: Freescale Semiconductor

Specifications of MC33997DW

• Applications: Switching Power Supply, Microprocessor
• Voltage - Input: 6 ~ 26.5 V
• Number Of Outputs: 5
• Voltage - Output: 3.3V, 5V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 24-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

2
33997
INTERNAL BLOCK DIAGRAM
5.0 V
5.0 V
KA_VPWR
VREF2
VREF1
VPWR
CRES
Figure 2. 33997 Simplified Internal Block Diagram
Start
Charge
V REF1
V REF2
Osc
Pump
Sof t
I-lim
Retry
Retry
Reg.
Reg.
INTERNAL BLOCK DIAGRAM
Enb
Snsenb
Snsenb
SNSEN
Logic
Latch
Reference
&
Bandgap
Voltage
Enable
Control
EN
33997
Snsenb
Enb
V bg
Drive
PwrOK
Ramp
POR
Enb
Enb
V bg
V bg
VkamOK
Analog Integrated Circuit Device Data
Regulat or
Linear
Driver
3.3V
Standby
3.3V
Reg.
GND
Freescale Semiconductor
VSW
VDDH
FBL
VKAM
PWRO K
FBKB
VSUM
DRVL
VKAMO K
3.3 V
3.3 V
5.0 V