zl2006 Intersil Corporation, zl2006 Datasheet - Page 13

• Manufacturer Part Number: zl2006
• Description: Adaptive Digital Dc-dc Controller With Drivers And Current Sharing
• Manufacturer: Intersil Corporation

4.4 Multi-mode Pins
In order to simplify circuit design, the ZL2006
incorporates patented multi-mode pins that allow the
user to easily configure many aspects of the device
with no programming. Most power management
features can be configured using these pins. The multi-
mode pins can respond to four different connections as
shown in Table 5. These pins are sampled when power
is applied or by issuing a PMBus Restore command
(See Application Note AN33).
Pin-strap Settings: This is the simplest implementation
method, as no external components are required. Using
this method, each pin can take on one of three possible
states: LOW, OPEN, or HIGH. These pins can be
connected to the V25 pin for logic HIGH settings as
this pin provides a regulated voltage higher than 2 V.
Using a single pin, one of three settings can be
selected. Using two pins, one of nine settings can be
selected.
Table 5. Multi-mode Pin Configuration
Resistor to SGND
(Logic HIGH)
(Logic LOW)
Pin Tied To
OPEN
(N/C)
HIGH
LOW
13
Set by resistor value
No connection
< 0.8 VDC
> 2.0 VDC
Value
ZL2006
Resistor Settings: This method allows a greater range
of adjustability when connecting a finite value resistor
(in a specified range) between the multi-mode pin and
SGND. Standard 1% resistor values are used, and only
every fourth E96 resistor value is used so the device
can reliably recognize the value of resistance
connected to the pin while eliminating the error
associated with the resistor accuracy. Up to 31 unique
selections are available using a single resistor.
I
be configured via the I
standard PMBus commands. Additionally, any value
that has been configured using the pin-strap or resistor
setting methods can also be re-configured and/or
verified via the I
AN33 for more details.
The SMBus device address and VOUT_MAX are the
only parameters that must be set by external pins. All
other device parameters can be set via the I
The device address is set using the SA0 and SA1 pins.
VOUT_MAX is determined as 10% greater than the
voltage set by the V0 and V1 pins.
Figure 8. Pin-strap and Resistor Setting Examples
2
C/SMBus Method: Almost any ZL2006 function can
2
C/SMBus. See Application Note
2
C/SMBus interface using
December 15, 2010
2
FN6850.1
C/SMBus.