LTC2916CDDB-1#PBF Linear Technology, LTC2916CDDB-1#PBF Datasheet - Page 6

• Manufacturer Part Number: LTC2916CDDB-1#PBF
• Manufacturer: Linear Technology

Specifications of LTC2916CDDB-1#PBF

• Operating Supply Voltage (min): 1.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temperature Classification: Commercial
• Operating Temp Range: 0C to 70C
• Pin Count: 8
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

LTC2915/LTC2916
PIN FUNCTIONS
GND (Pin 4/Pin 1): Device Ground.
MR (Pin 3/Pin 2) (LTC2916 only): Manual Reset Input
(Active Low). A low level on the MR input causes the part
to issue a reset, which is released one reset timeout after
the input goes high. The pin has an internal 100k pull-up
to V
pushbutton. Leave open if unused.
RST (Pin 5/Pin 8): Open Drain RST Output. Asserts low
when VM is below the threshold selected by SEL1, SEL2
and TOL input pins. Held low for an adjustable timeout
after VM input is above threshold.
RT (Pin 6/Pin 7): Reset Timeout Control Pin. Attach an
external Capacitor (C
9ms/nF . Floating RT generates a reset timeout of approxi-
mately 400μs. Tie RT to V
of approximately 200ms.
SEL1, SEL2 (Pins 2, 7/Pins 3, 6): Monitor Voltage Select
Three-State Inputs. SEL1 and SEL2 control the nominal
threshold voltage that VM is set to monitor. Connect to V
GND or leave unconnected in open state. (See Table 1).
BLOCK DIAGRAM
6
CC
, and thus may interface directly to a momentary
VM
+
–
SEL1
0.5V
RT
3 STATE
DECODE
) to GND to set a reset timeout of
REFERENCE
SEL2
MONITOR
DIVIDER
DIVIDER
MATRIX
MATRIX
CC
(TSOT/DFN)
to generate a reset timeout
LTC2915
TOL
–
+
MR
LTC2916
V
CC
CC
100k
,
TOL (Pin 3/Pin 2) (LTC2915 only): Three-State Input
for Supply Tolerance Selection (–5%, –10% or –15%).
Controls the tolerance band at which the VM supply is
monitored. Connect to V
in open state. (See Table 2).
V
to ground with a 0.1μF ceramic capacitor. A minimum of
1.5V on V
lockout and that the voltage thresholds are accurate.
Operates as a direct supply input for voltages up to 5.5V.
Operates as a shunt regulator for supply voltages greater
than 5.7V and should have a resistor between this pin and
the supply to limit V
5mA. When used without a current-limiting resistor, pin
voltage must not exceed 5.7V.
VM (Pin 1/Pin 4): Voltage Monitor Input to RST Compara-
tor. SEL1, SEL2 and TOL inputs select the exact threshold
that asserts the RST output.
Exposed Pad (Pin 9, DFN Only): Exposed Pad may be left
open or connected to device ground.
CC
200ms TIMER
RESET TIMER
ADJUSTABLE
INTERNAL
(Pin 8/Pin 5): Power Supply Input. Bypass this pin
RT
CC
ensures that the part is out of under voltage
V
CC
DETECT
CC
DRIVER LOGIC
input current to no greater than
CC
RESET
, GND, or leave unconnected
V
CC
GND
RST
V
6.2V
29156 BD
CC
29156fa