MAX8576 MAXIM [Maxim Integrated Products], MAX8576 Datasheet - Page 4

• Manufacturer Part Number: MAX8576
• Description: 3V to 28V Input, Low-Cost, Hysteretic Synchronous Step-Down Controllers
• Manufacturer: MAXIM [Maxim Integrated Products]

3V to 28V Input, Low-Cost, Hysteretic
Synchronous Step-Down Controllers
ELECTRICAL CHARACTERISTICS (continued)
(V
V
11.5V; DH = unconnected; DL = unconnected; T
Note 1: Guaranteed by design.
Note 2: This current linearly compensates for the MOSFET temperature coefficient.
Note 3: Specifications to -40 C are guaranteed by design and not production tested.
4
VL or V
(UVLO)
Supply Current
REGULATOR
Output Regulation Accuracy
Overvoltage-Protection (OVP)
Threshold
High-Side Current-Sense Over-
Current Trip Adjustment Range
DRIVER SPECIFICATIONS
DH Driver Resistance
DL Driver Resistance
DH Minimum On-Time
DL Minimum On-Time
EN
Input Voltage Low
Input Voltage High
CC
IN
_______________________________________________________________________________________
= 12V (MAX8576/MAX8577 only), 4.7µF capacitor from VL (MAX8576/MAX8577 only) or V
= V
CC
EN
PARAMETER
Undervoltage Lockout
= 5V (MAX8578/MAX8579 only); 0.01µF capacitor from SS to GND; V
V
V
Sourcing current
Sinking current
Sourcing current
Sinking current
Normal operation
V
V
Rising
Falling
No switching, V
(MAX8576/MAX8577)
V
switching (MAX8578/MAX8579)
FB
IN
CC
CC
EN
- V
peak
= 0V or V
= 3V, MAX8578/MAX8579
= 5.5V, MAX8578/MAX8579
OCSET
A
FB
= -40°C to +85°C, unless otherwise noted. Note 3)
FB
= 0.65V, no
= 0.65V
CONDITIONS
V
V
V
V
V
IN
IN
IN
CC
CC
= 12V
= V
= V
= 5V
= 3.3V
FB
VL
VL
= 0.65V; V
= 5V
= 3.3V
BST
CC
0.591
2.75
2.40
0.70
0.05
MIN
1.5
(MAX8578/MAX8579 only) to GND;
= 5V; V
LX
TYP
= V
GND
0.607
MAX
2.90
2.55
0.80
0.40
245
220
3.5
3.0
4.0
2.0
0.7
= 0V; V
2
2
2
2
4
OCSET
UNITS
mA
ns
ns
V
V
V
V
V
V
=