FAN5645 Datasheet, PDF (4/10 Pages) Fairchild Semiconductor – Indicator LED Blinker with Single-Wire Interface

Electrical Specifications
VIN = 2.7V to 5.5V, TA = -40°C to +85°C, Vf = 1.8V to (3.5V or VIN-0.1V, whichever is smaller). Typical values are at
TA = 25°C, VIN = 3.6V, and Vf = 2.5V.
Symbol
Parameter
Power Supplies
ISD
Shutdown current in STOP
(sleep) mode
Operating current in
IIN
RUN,TRAINING, RUN_ONCE,
RESET_FOLLOW modes
VIH
Control high-level input voltage
VIL
Control low-level input voltage
Conditions
VIN = 3.6V
VIN = 3.6V, ILED = 0mA
Min. Typ. Max. Units
0.30 0.75 µA
33
55
µA
1.2
V
0.4
V
IIH
Control pin input current
CTRL = 1.8V
1
100
nA
VIN Rising
2.5
VUVLO Under-voltage lockout threshold
VIN Falling
2.2
Regulation
Maximum regulated output
current
Sourced from LED+ pin
20
IOUT
Minimum regulated output
current
Sourced from LED+ pin
1
IOUT_RIPPLE Maximum LED ripple current⁽¹⁾
ΔVIN = 700mV, trise = tfall = 10µs,
T = 570µs
0.5
∆ISET
ISET accuracy
ISET_LINEARITY ISET linearity
∆IOUT_LOAD IOUT load regulation
∆IOUT_LINE IOUT line regulation
VISET
ISET voltage
ISET_LIM
ISET current limit
Current mirror ratio
VDROPOUT Dropout voltage
ISC
Short-circuit current limit
TSD Thermal shutdown
TA = 25°C, ILED = 1mA-20mA
-3
+3
ILED = 1mA-20mA
5
LED Vf = 1.8 to 3.5V, VIN = 3.6V -3
+3
VIN = 2.7 to 4.8V, Vf = 2.5V
-3
+3
24kΩ ≤ RSET ≤ 494kΩ
1.235
VLED+ = 0V, VISET = 0V
150
IOUT / ISET
400
ILED = 20mA, -10% drop
40
RSET or IOUT w.r.t GND
60
80
Rising Temperature at Junction
150
Hysteresis
20
Timing
fOSC
TOSC
tON
tOFF
Internal oscillator frequency
Oscillator stability
LED on-time resolution⁽¹⁾
LED off-time resolution⁽¹⁾
VIN = 3.6V
51
64
77
-3
3
1
10
Note:
1. Guaranteed by design; not tested in production.
V
V
mA
% p-p
%
%
%
%
V
μA
mV
mA
°C
°C
kHz
%
ms
ms
© 2006 Fairchild Semiconductor Corporation
FAN5645 • Rev. 1.0.0
4
www.fairchildsemi.com