RT8801B データシートの表示（PDF） - Richtek Technology
部品番号
コンポーネント説明
メーカー
RT8801B
Richtek Technology
RT8801B Datasheet PDF : 23 Pages
| |||
Preliminary
RT8801B
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-32L 5x5 ---------------------------------------------------------------------------------------------------- 2.78W
z Package Thermal Resistance (Note 4)
VQFN-32L 5x5, θJA ----------------------------------------------------------------------------------------------- 36°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 2)
HBM (Human Body Mode) ------------------------------------------------------------------------------------- 2kV
MM (Machine Mode) --------------------------------------------------------------------------------------------- 200V
Recommended Operating Conditions (Note 3)
z Supply Voltage, VDD --------------------------------------------------------------------------------------------- 5V ± 10%
z Ambient Temperature Range ----------------------------------------------------------------------------------- 0°C to 70°C
z Junction Temperature Range ----------------------------------------------------------------------------------- 0°C to 125°C
Electrical Characteristics
(VDD = 5V, TA = 25°C, unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Units
VDD Supply Current
Nominal Supply Current
Power-On Reset
IDD
PWM 1,2,3,4 Open
--
12 16 mA
POR Threshold
Hysteresis
VDVD Threshold
Oscillator
Trip (Low to High)
Hysteresis
VDDRTH
VDDHYS
VDVDTP
VDVDHYS
VDD Rising
Enable
4.0 4.2 4.5 V
0.2 0.5 --
V
0.8 0.9 1.0 V
--
70
-- mV
Free Running Frequency
Frequency Adjustable Range
Ramp Amplitude
Ramp Valley
Maximum On-Time of Each Channel
fOSC
fOSC_ADJ
ΔVOSC
VRV
RRT = 22.5kΩ
RRT = 22.5kΩ
250 300 350 kHz
50
-- 400 kHz
--
1.9
--
V
0.7 1.0 --
V
62
66
75
%
RT Pin Voltage
Reference and DAC
VRT
RRT = 22.5kΩ
1.7 1.8 1.9 V
DACOUT Voltage Accuracy
DAC (VID0-VID5) Input Low
DAC (VID0-VID5) Input High
VDAC ≥ 1V
−1
ΔVDAC
VDAC < 1V
−10
VILDAC
--
VIHDAC
1.4
DS8801B-04 August 2007
All brandname or trademark belong to their owner respectively
--
+1
%
-- +10 mV
-- 0.8 V
--
--
V
To be continued
www.richtek.com
9
Share Link: