ADP3209D ON Semiconductor, ADP3209D Datasheet - Page 15

• Manufacturer Part Number: ADP3209D
• Description: Adp3209d 5-bit, Programmable, Single-phase, Synchronous Buck Controller
• Manufacturer: ON Semiconductor

Output Enable and UVLO
voltage to the controller must be greater than the V
threshold and the EN pin must be driven high. If the VCC
Table 1. VID Code Table
For the ADP3209D to begin switching, the VCC supply
Enable
3
2
4
1
CH1 5.00V
CH3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
Figure 23. ADP3209D RVP Function
1.00V
CH2 5.00V
CH4 20.0V
VID4
X
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
M2.00ms
PWRGD
CSREF
DRVH
DRVL
A CH3
VID3
X
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
580mV
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CCOK
VID2
X
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
15
voltage is less than the V
logic low, the ADP3209D shuts off. In shutdown mode, the
controller holds DRVH and DRVL low, shorts the capacitors
of the SS and PGDELAY pins to ground, and drives PWRGD
to low.
during startup and shutdown of the ADP3209D. All input
pins must be at ground prior to removing or applying VCC,
and all output pins should be left in high impedance state
while VCC is off.
Current Monitor Function
IMON pin sources a current proportional to the inductor
current. A resistor from IMON pin to FBRTN sets the gain.
A 0.1 mF is added in parallel with R
ripple. The IMON pin is clamped to prevent it from going
above 1.15 V.
The user must adhere to proper power−supply sequencing
The ADP3209D has an output current monitor. The
VID1
X
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
VID0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
X
CCUVLO
threshold or the EN pin is
MON
Nominal V
to filter the inductor
1.250
1.225
1.200
1.175
1.150
1.125
1.100
1.075
1.050
1.025
1.000
0.975
0.950
0.925
0.900
0.875
0.850
0.825
0.800
0.775
0.750
0.725
0.700
0.675
0.650
0.625
0.600
0.575
0.550
0.525
0.500
0.400
0.000
CCGFX
(V)