NCP2823 Series
http://onsemi.com
4
ELECTRICAL CHARACTERISTICS Min and Max Limits apply for T
A
between −40°C to +85°C and for V
DD
between 2.5 V to 5.5 V
(Unless otherwise noted). Typical values are referenced to T
A
= + 25 °C and V
DD
= 3.6 V. (see Note 8)
Symbol
Parameter Conditions Min Typ Max Unit
GENERAL PERFORMANCES
V
P
Operational Power Supply 2.5 5.5 V
F
OSC
Oscillator Frequency 250 300 350 kHz
I
DD
Supply current NCP2823A
V
P
= 3.6 V, No Load
NCP2823B
V
P
= 3.6 V, No Load
1.8
2.6
2.4
4.6
mA
I
sd
Shutdown current V
ENL
= V
ENR
= 0 V 0.01 1
mA
T
ON
Turn ON Time EN rising edge 7.4 ms
T
OFF
Turn Off Time EN falling edge 4 ms
Z
sd
Class D Output impedance in
shutdown mode
V
ENL
= 0 V 20
kW
R
DS(ON)
Static drain−source on−state
resistance of power Mosfets
300
mW
h
Efficiency
NCP2823A, V
P
= 3.6 V, Po = 600 mW, RL =
8 W, F = 1 kHz
92
%
NCP2823B, V
P
= 3.6 V, Po = 1 W, RL = 4 W,
F = 1 kHz
90
Av Voltage gain
285 kW
Ri
300 kW
Ri
315 kW
Ri
V/V
F
LP
−3 dB Cut off Frequency of
the Built in Low Pass Filter
30
kHz
T
SD
Thermal Shut Down
Protection
150 °C
T
SDH
Thermal Shut Down
Hysteresis
10 °C
V
IH
Rising Voltage Input Logic
High
1.2 − V
DD
V
V
IL
Falling Voltage Input Logic
Low
− 0.4 V
R
PLD
Pull Down Resistor 250
kW
AUDIO PERFORMANCES
v
oo
Output offset 0.3 mV
PSRR Power supply rejection ratio
F = 217 Hz, Input ac grounded −77 dB
F = 1 kHz, Input ac grounded −63
SNR Signal to noise ratio V
P
= 5 V, Pout = 600 mW (A. Weighted) 97 dB
CMRR Common mode rejection ratio Input shorted together
V
IC
= 1 V
pp
, f = 217 Hz
−80 dB
Vn Output Voltage noise Input ac grounded, Av =
0 dB
No
weighting
35 mV
A. Weighted 26
8. Performances guaranteed over the indicated operating temperature range by design and/or characterization, production tested at T
J
= T
A
= 25°C.