RT8113 Просмотр технического описания (PDF) - Richtek Technology
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RT8113 Datasheet PDF : 21 Pages
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RT8113
Parameter
Symbol
Test Conditions
Min Typ Max Unit
RT/EN
Chip Disable Threshold
Running Frequency
RT Pin Voltage
VDIS
fOSC
VRT, GND
RT Pin Voltage
VRT, VDD
Modulation Gain
ARAMP
Reference Voltage Accuracy
RRT = 60kΩ
RRT = 60kΩ, connected between RT/EN
and GND
RRT = 60kΩ, connected between RT/EN
and VCC5
RRT = 60kΩ
--
-- 0.4 V
180 200 220 kHz
1.52 1.6 1.68 V
VCC5− VCC5− VCC5−
1.68 1.6 1.52
V
--
22 -- %/V
1V to 1.6V
−0.5 -- 0.5 %
DAC Accuracy
0.8V to 1V
−5
--
5 mV
0.5V to 0.8V
−8
--
8 mV
VID Threshold Logic-Low VIL
Voltage
Logic-High VIH
VID [7:1]
VID [7:1]
--
-- 0.4 V
0.8
--
--
V
Error Amplifier
DC Gain
Gain-Bandwidth
ADC
GBW
No Load
CLOAD = 10pF
--
80 -- dB
--
10 -- MHz
Slew Rate
Output Voltage Range
SR
VCOMP
CLOAD = 10pF
10
--
-- V/μs
0.5
--
3.6 V
Maximum Current
IEA_SLEW Slew
300 --
-- μA
Power Sequence
PGOOD Low Voltage
VPGOOD IPGOOD = 4mA
--
-- 0.4 V
Soft-Start Delay
tD1
After POR, from EN = High to VOUT Rising 0
--
5 ms
VBOOT Duration
PGOOD Delay
tD3
tD5
Measured from final VOUT value to
PGOOD = High
0.05 --
0.05 --
3 ms
3 ms
Current Sense Amplifier
Maximum Current
Input Offset Voltage
Soft Start
IGMMAX
VOSCS
VCSP = 1.3V, sink current from CSN
100 --
-- μA
−1.5 0 1.5 mV
Soft Start Current
VID Change Current
Gate Driver
ISS1
ISS2
Slew
Slew
12 16 20 μA
120 160 200 μA
UGATE Drive Source
IUGATEsr
BOOT – PHASE = 12V,
UGATE – PHASE = 6V
0.6
1
--
A
UGATE Drive Sink
RUGATEsk
BOOT – PHASE = 8V,
250mA Source Current
--
1
--
Ω
LGATE Drive Source
ILGATEsr VCC12 = 12V, VLGATE = 6V
0.6
1
--
A
LGATE Drive Sink
Protection
RLGATEsk 250mA Sink Current
-- 0.8 --
Ω
Over-Voltage Threshold VOVP
Sweep FB Voltage, VFB − VEAP
125 150 175 mV
OCP Input Offset Voltage VOCOFS
−10 -- 10 mV
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8
To be continued
DS8113-02 April 2011
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