RT8206A データシートの表示（PDF） - Richtek Technology
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RT8206A Datasheet PDF : 26 Pages
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RT8206A/B
Electrical Characteristics
(VIN = 12V, EN1 = EN2 = VCC, VBYP = 5V, PVCC = 5V, VENLDO = 5V, No Load on LDO, VOUT1, VOUT2 and REF, TA = 25°C,
unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Input Supply
VIN Standby Supply Current IVIN_SBY
VIN = 6V to 25V, Both SMPS Off,
ENLDO = 5V
VIN Shutdown Supply
Current
IVIN_SHDH
VIN = 6V to 25V,
ENx = ENLDO = GND
Both SMPSs On,
Quiescent Power
Consumption
FB1 = SKIP = GND, FB2 = VCC,
VOUT1 = BYP = 5.3V,
VOUT2 = 3.5V (Note 5)
SMPS Output and FB Voltage
VOUT1 Output Voltage in
Fixed Mode
VOUT1
VIN = 6V to 25V, FB1= GND,
SKIP = 5V
--
180 250 μA
--
20
40
μA
--
5
7 mW
4.975 5.05 5.125 V
VOUT2 Output Voltage in
Fixed Mode
FBx in Output Adjustable
Mode
SECFB Voltage
Output Voltage Adjust
Range
FBx Adjustable-mode
Threshold Voltage
DC Load Regulation
VOUT2
VIN = 6V to 25V, FB2 = VCC,
SKIP = 5V
FBx
SECFB
VIN = 6V to 25V
VIN = 6V to 25V (RT8206A)
SMPS1, SMPS2
VL O AD
Fixed or Adj-Mode comparator
threshold
Either SMPS, SKIP = VCC, 0 to 5A
Either SMPS, SKIP = REF, 0 to 5A
Either SMPS, SKIP = GND, 0 to 5A
3.285 3.33 3.375 V
1.975 2 2.025 V
1.92
2
2.08 V
2
--
5.5
V
0.2 0.4 0.55 V
--
−0.1
--
--
−1.7
--
%
--
−1.5
--
Line Regulation
On Time
VL INE
Either SMPS, VIN = 6V to 25V
-- 0.005 -- %/V
TON =
VCC
SMPS1 = 5.05V (200kHz) 1895 2105 2315
SMPS2 = 3.33V (250kHz) 999 1110 1221
On-Time Pulse Width
tUGATEx
TON =
REF
SMPS1 = 5.05V (300kHz) 1227 1403 1579
ns
SMPS2 = 3.33V (375kHz) 647 740 833
TON =
GND
SMPS1 = 5.05V (400kHz) 895
SMPS2 = 3.33V (500kHz) 475
1052 1209
555 635
Minimum Off-Time
tLGATEx
Ultrasonic Mode Frequency
SKIP = REF
200 300 400 ns
25
33
-- kHz
Soft Start
Soft-Start Time
Current Sense
tSSx
Zero to full limit from ENx Enable
--
2
--
ms
Current Limit Threshold
(Default)
Current Limit Current
Source
ILI MX
ILIMx = VCC, GND − PHASEx
90 100 110 mV
4.75
5
5.25 μA
To be continued
DS8206A/B-06 August 2011
www.richtek.com
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