RT8859M 데이터 시트보기 (PDF) - Richtek Technology
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RT8859M Datasheet PDF : 51 Pages
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RT8859M
Parameter
Symbol
Output Voltage Range
VCOMP
MAX Source/Sink Current
Current Sense Amplifier
IOUTEA
Input Offset Voltage
VOSCS
Impedance at Negative Input RISENxN
Impedance at Positive Input RISENxP
DC Gain
Input Range
VISEN Linearity
tON Setting
TONSETx Pin Voltage
CCM On-Time Setting
TONSETx Input Current
Range
On-Time in PS2 (Core only)
Minimum Off-Time
IBI AS
IBIAS Pin Voltage
QRSET
Quick Response On-Time
Setting
QRSET Source Current
No Load Line Setting
Threshold
OFS Function
OFS Enable/Disable
Threshold Voltage
VIS EN_ IN
VIS EN_ ACC
VTON
tON
IRTON
tO N_ PS 2
tOFF
VIBIAS
tONx_QR
IQRSET
VIH
VIL
VEN _OFS
Offset Voltage
VOUT
Impedance
RSET Setting
RSET Voltage
Zero Current Detection
Zero Current Detection
Threshold
Protection
ROFS
VRSET
VZCD
Under Voltage Lock-out
(UVLO)Threshold
Absolute Over Voltage
(OVP) Protection Threshold
VUVLO
ΔVUVLO
VOVABS
Test Conditions
RLOAD = 47kΩ
VCOMP = 2V
CORE VR
AXG VR
−30mV < VISEN_IN < 50mV
Min Typ Max Unit
0.3
--
3.6
V
--
250
--
μA
−0.75
--
1
--
1
--
--
10
--
20
−50
--
−1
--
0.75 mV
--
MΩ
--
MΩ
--
V/V
--
100
mV
1
%
IRTON = 80μA, VDAC = 0.75V
--
1.07
--
V
IRTON = 80μA, PS0, PS1
275
305
335
ns
25
--
280
μA
With Respect to PS0 tON
--
85
--
%
--
250
--
ns
RIBIAS = 53.6kΩ
2.09 2.14 2.19
V
VDAC = 0.75V, VQRSET = 1.2V,
IRTON = 80μA
--
305
--
ns
Before UVLO
--
80
--
μA
QRSET Voltage before
UVLO, Relative to VCC
VCC − 0.5 --
--
V
--
-- VCC − 1.8 V
VOFS > VEN_OFS before EN
ris ing
VID = 1V, VOFS = 1.83V
VID = 1V, VOFS = 0.9V
VID = 1V, VOFS = 1.2V
0.7
1.2
--
V
1.62 1.63 1.64
0.69
0.7
0.71
V
0.9
1
1.01
1
--
--
MΩ
RSET Voltage, VDAC = 1V
0.97
1
1.03
V
ISEN1P (AP) − ISEN1N (AN)
--
1
--
mV
Falling Edge, 100mV
Hysteresis
Falling Edge Hysteresis
With respect to VOUT_Max
4.04 4.24 4.44
V
--
100
--
mV
100
150
200
mV
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS8859M-05 July 2012
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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