FAH4840-269128 Datasheet, PDF (5/21 Pages) List of Unclassifed Manufacturers – FAH4840 Haptic Driver for Linear Resonant Actuators (LRAs)

AC Electrical Characteristics
TA = 25°C, VDD = 3.3 V, VREG=2.0 V, unless otherwise noted.
Symbol
Parameter
Conditions
tWU Wake-Up Time
PWM=80/20% Duty Cycle, HEN/PWM LOW
to HIGH, Measurement Point PWM = 50%,
Output Point = 90%
tSD Shutdown Time
PWM=80/20% Duty Cycle, HEN HIGH to
LOW, Measurement Point HEN = 50%,
Output Point = 90%
Restrk Auto Resonance Tracking PWM=22.4 kHz 80/20% Duty, RL= 25 Ω
Min. Typ. Max. Unit
1 150 µs
0.2 150.0 µs
-2.5
2.5 Hz
tWU
tSD
Figure 4. Haptic Enable / Disable Functional Timing
Table 1.
V_DD vs. V_REG Supply Values
V_DD (V)
2.5
2.7
3.0
3.3
1.4
1.4
1.4
1.4
1.6
1.6
1.6
1.6
1.8
V_{REG_OUT}
2.0
(Programmed Voltage)
2.2
1.8
1.8
1.8
2.0
2.0
2.0
2.2
2.2
2.2
2.4
2.4
2.4
2.4
2.6
2.6
2.6
2.8
2.8
3.0
3.2
© 2013 Fairchild Semiconductor Corporation
FAH4840 • Rev. 1.0.0
5
www.fairchildsemi.com