RT8802A
Absolute Maximum Ratings (Note 1)
z Supply Voltage, VDD -------------------------------------------------------------------------------------- 7V
z Input, Output or I/O Voltage ------------------------------------------------------------------------------ (GND− 0.3V) to (VDD+ 0.3V)
z Power Dissipation, PD @ TA = 25°C
VQFN−40L6x6---------------------------------------------------------------------------------------------- 2.857W
z Package Thermal Resistance (Note 2)
VQFN-40L 6x6, θJA ----------------------------------------------------------------------------------------- 35°C/W
z Junction Temperature -------------------------------------------------------------------------------------- 150°C
z Lead Temperature (Soldering, 10 sec.)---------------------------------------------------------------- 260°C
z Storage Temperature Range ----------------------------------------------------------------------------- −65°C to 150°C
z ESD Susceptibility (Note 3)
HBM (Human Body Mode) ------------------------------------------------------------------------------- 2kV
MM (Machine Mode) --------------------------------------------------------------------------------------- 200V
Recommended Operating Conditions (Note 4)
z Supply Voltage, VDD -------------------------------------------------------------------------------------- 5V 10%
z Junction Temperature Range----------------------------------------------------------------------------- −40°C to 125°C
z Ambient Temperature Range----------------------------------------------------------------------------- −40°C to 85°C
Electrical Characteristics
(VDD = 5V, TA = 25°C, unless otherwise specified)
Parameter
Supply Current
Nominal Supply Current
Symbol
Test Conditions
Min
Typ
Max
Unit
V
DD
I
PWM 1, 2, 3, 4, 5 Open
VR_RDY = High
--
12
1
16
mA
mA
DD
VID Change Current
Power On Reset
POR Threshold
Hysteresis
I
0.5
1.5
SS
V
V
Rising
4.0
0.2
0.9
--
4.2
0.5
1.0
60
4.5
--
V
V
DDRTH
DD
V
DDHYS
Trip (Low to High)
Hysteresis
V
Enable
Enable
1.1
--
V
DVDTH
V
DVD
Threshold
V
mV
DVDHYS
Trip (Low to High)
Hysteresis
V
TTTH
0.75
--
0.85
0.1
0.95
--
V
TT
Threshold
V
V
TTHYS
Oscillator
Free Running Frequency
Frequency Adjustable Range
Ramp Amplitude
f
f
R
= 20kΩ
180
50
200
--
220
400
--
kHz
kHz
V
OSC
RT
OSC_ADJ
ΔV
R
RT
= 20kΩ
--
1.9
1.0
OSC
Ramp Valley
V
0.7
--
V
RV
Copyright 2012 Richtek Technology Corporation. All rights reserved.
©
is a registered trademark of Richtek Technology Corporation.
All brandname or trademark belong to their owner respectively.
DS8802A-09 March 2012
www.richtek.com
17
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