KIT33701DWBEVB Freescale Semiconductor, KIT33701DWBEVB Datasheet - Page 17

• Manufacturer Part Number: KIT33701DWBEVB
• Description: KIT FOR 33701 POWER SUPPLY
• Manufacturer: Freescale Semiconductor
• Type: LDO Controllers & Regulatorsr

Specifications of KIT33701DWBEVB

• Main Purpose: DC/DC, Step Down with LDO
• Outputs And Type: 2, Non-Isolated
• Voltage - Input: 2.8 ~ 6V
• Regulator Topology: Buck
• Frequency - Switching: 300kHz
• Board Type: Fully Populated
• Utilized Ic / Part: MC34701
• Product: Power Management Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Voltage - Output: -
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: 34701

POWER SUPPLY PIN (VDDI)
X7R capacitor is recommended.
ADDRESS PIN (ADDR)
when used in an I
tied to VDDI or grounded through a 10k Ω resistor. Refer to
I
pin.
ENABLE 1 AND 2 PINS (EN1 AND EN2)
function and selection of the Power Sequencing mode
concurrently.
Power Sequencing mode selection.
and both can withstand a short circuit to the supply voltage,
6.0V.
Table 5.
Analog Integrated Circuit Device Data
Freescale Semiconductor
2
C Bus Operation on page 26
Internal supply voltage. A ceramic low ESR 1uF 6V X5R or
The ADDR pin is used to set the address of the device
These two pins permit positive logic control of the Enable
Both EN1 and EN2 pins have internal pull-down resistors
EN1
0
0
1
1
Operating Mode Selection
Table 5
2
EN2
C communication. This pin can either be
0
1
0
1
depicts the EN1 and EN2 function and
for more information on this
Standard Power Sequencing
Inverted Power Sequencing
No Power Sequencing,
Regulators Disabled
Regulators Enabled
Operating Mode
RESET TIMER PIN (RT)
the delay between the time when the LDO and switcher
outputs are active and stable and the
An external resistor and capacitor are used to program the
timer. The power-up delay can be obtained by using the
following formula:
is the Reset Timer programming capacitor, both connected in
parallel from RT to ground.
accuracy if R
RESET OUTPUT PIN (
regulator and the LDO feedback voltages. It is an open drain
output and has to be pulled up to some supply voltage (e.g.,
the output of the LDO) by an external resistor.
voltages—the linear regulator output V
regulator output V
is out of regulation (high or low), the
There is a 20
During power-up sequencing,
Timer times out.
CLOCK SELECTION PIN (CLKSEL)
or a synchronization input pin. The CLKSEL pin is also used
for the I
CLOCK SYNCHRONIZATION PIN (CLKSYN)
The Reset Timer power-up delay (RT) pin is used to set
Where R
Note Observe the maximum C
The Reset Control circuit monitors both the switching
The Reset Control circuit supervises both output
This pin sets the CLKSYN pin as either an oscillator output
Oscillator output/synchronization input pin.
2
C address selection.
t
is the Reset Timer programming resistor and C
t
µ
t
is less than 10k Ω .
s delay filter preventing erroneous resets.
D
= 10ms + R
OUT
. When either of these two regulators
RST
t
FUNCTIONAL PIN DESCRIPTION
C
RST
t
)
FUNCTIONAL DESCRIPTION
t
value and expect reduced
is held low until the Reset
RST
RST
LDO
pin is pulled low.
output is released.
and the switching
34701
17
t