MAX856 Maxim, MAX856 Datasheet - Page 7

• Manufacturer Part Number: MAX856
• Description: 3.3V/5V or Adjustable-Output / Step-Up DC-DC Converters
• Manufacturer: Maxim

Figure 1. Block Diagram
SHDN
3/5*
LBO
LBI
*MAX856/MAX858 ONLY
**MAX857/MAX859 ONLY
MAXIMUM
ONE-SHOT
ON-TIME
_______________________________________________________________________________________
TRIG
ONE-SHOT
MINIMUM
ONE-SHOT
OFF-TIME
MAX856–MAX859
Q
N
Q
S
ONE-SHOT
ERROR COMPARATOR
F/F
LBI COMPARATOR
R
3.3V/5V or Adjustable-Output,
CURRENT-LIMIT
COMPARATOR
TRIG
Q
Step-Up DC-DC Converters
REFERENCE
N
*
*
GND
REF
LX
OUT
FB**
V
IN
**
**
V
OUT
7