Analog Devices DC1717B Demo Manual page 5

TURRETS
V1: 12V supply input; do not exceed ±42V.
V2: 5V supply input; do not exceed ±42V.
V3: 8V supply input; do not exceed ±42V.
GND: Adjacent ground connection for input supplies.
VOUT: Output for up to 2A load.
GND: Adjacent ground connection for load.
AVI: Auxiliary Voltage Input. 6V to 24V input regulated
by U4 to 5V for LEDs, logic and pull ups on various pins.
GND: Adjacent ground connection for auxiliary supply.
5V: 5V regulated output provided by U4, for powering
logic, LEDs and pull ups. Use this turret to verify that 5V
is present.
JUMPERS
JP1, HYS: Add 30mV fixed hysteresis to the OV and UV
comparators, or 3% referred to actual supply input. In the
RHYS position input-referred hysteresis is set to 6.4%, as
controlled by R11. Default stuffing position is for 30mV.
LEDS
No more than one of D8, D9 and D10 will be illuminated
at any given moment:
D8: indicates power is being taken from V1.
D9: indicates power is being taken from V2.
D10: indicates power is being taken from V3.
DEMO MANUAL DC1717B
Each of the following turrets is a direct connection to the
like-name LTC4417 pin:
VALID1: pulled up with 100kOhm to auxiliary 5V supply.
VALID2: pulled up with 100kOhm to auxiliary 5V supply.
VALID3: pulled up with 100kOhm to auxiliary 5V supply.
EN: pulled up by 2μA internal to the LTC4417. Optional
R33 may be added as a pull-up to the auxiliary 5V power
supply.
SHDN: pulled up by 2μA internal to the LTC4417. Optional
R36 may be added as a pull-up to the auxiliary 5V power
supply.
CAS: used to cascade a second DC1717B. Connect the
CAS turret of the high priority DC1717B to the EN turret
of the lower priority DC1717B.
Grounds must be connected in common.
JP2, EN: Directly controls EN pin. Default stuffing position
is ON, pulled up by internal 2μA current source.
D11, D16 and D17 indicate the presence of a valid input
on any of the three supplies:
D17: V1 is 12V±20%.
D11: V2 is 5V±20%.
D16: V3 is 8V±20%.
Rev 0
5