Motor de Búsqueda de Datasheet de Componentes Electrónicos
  Spanish  ▼
ALLDATASHEET.ES

X  

ISL97650 Datasheet(PDF) 16 Page - Renesas Technology Corp

No. de pieza ISL97650
Descripción Electrónicos  4-Channel Integrated LCD Supply
Download  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrónico  RENESAS [Renesas Technology Corp]
Página de inicio  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

ISL97650 Datasheet(HTML) 16 Page - Renesas Technology Corp

Back Button ISL97650 Datasheet HTML 12Page - Renesas Technology Corp ISL97650 Datasheet HTML 13Page - Renesas Technology Corp ISL97650 Datasheet HTML 14Page - Renesas Technology Corp ISL97650 Datasheet HTML 15Page - Renesas Technology Corp ISL97650 Datasheet HTML 16Page - Renesas Technology Corp ISL97650 Datasheet HTML 17Page - Renesas Technology Corp ISL97650 Datasheet HTML 18Page - Renesas Technology Corp ISL97650 Datasheet HTML 19Page - Renesas Technology Corp ISL97650 Datasheet HTML 20Page - Renesas Technology Corp  
Zoom Inzoom in Zoom Outzoom out
 16 / 20 page
background image
ISL97650
FN9198 Rev.4.00
Page 16 of 20
April 17, 2009
The maximum VOFF output voltage of a single stage charge pump is:
R6 and R7 in the “Typical Application Diagram” on page 10
determine VOFF output voltage.
Improving Charge Pump Noise Immunity
Depending on PCB layout and environment, noise pick-up at
the FBP and FBN inputs, which may degrade load regulation
performance, can be reduced by the inclusion of capacitors
across the feedback resistors (e.g. in the Application Diagram,
C21 and C22 for the positive charge pump). Set R6 • C20 = R7
• C19 with C19 ~ 100pF.
VON Slice Circuit
The VON Slice Circuit functions as a three way multiplexer,
switching the voltage on COM between ground, DRN and SRC,
under control of the start-up sequence and the CTL pin.
During the start-up sequence, COM is held at ground via an
NDMOS FET, with ~1k impedance. Once the start-up
sequence has completed, CTL is enabled and acts as a
multiplexer control such that if CTL is low, COM connects to
DRN through a 30
internal MOSFET, and if CTL is high, COM
connects to POUT internally via a 5MOSFET.
The slew rate of start-up of the switch control circuit is mainly
restricted by the load capacitance at COM pin as shown in
Equation 22:
Where Vg is the supply voltage applied to DRN or voltage at
POUT, which range from 0V to 36V. Ri is the resistance
between COM and DRN or POUT including the internal
MOSFET rDS(On), the trace resistance and the resistor
inserted, RL is the load resistance of switch control circuit, and
CL is the load capacitance of switch control circuit.
In the “Typical Application Diagram” on page 10, R10, R11 and
C15 give the bias to DRN based on Equation 23:
R12 can be adjusted to adjust the slew rate.
FIGURE 17. NEGATIVE CHARGE PUMP BLOCK DIAGRAM
FAULT
0.2V
CLK
EN
VDD
VSUP
FBN
NOUT
PGND
STOP
PWM
CONTROL
VREF
R6
40k
C20
820pF
C19
100pF
R7
328k
VOFF (-8V)
C13
470nF
D2
D3
C12
220nF
A2
0.4V
A1
M1
M2
1.2MHz
VOFF_MAX 2x

VSUP
VDIODE 2IOUT rON NOUT
Hr
ON NOUT
L
+

++
=
(EQ. 20)
VOFF
VFBN 1
R7
R6
--------
+

 V
REF
R7
R6
--------


=
(EQ. 21)
V
t
--------
Vg
Ri RL

 C
L
-------------------------------------
=
(EQ. 22)
VDRN
VON R11+AVDD R10
R10 R11
+
---------------------------------------------------------------
=
(EQ. 23)


Número de pieza similar - ISL97650

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
Intersil Corporation
ISL97650 INTERSIL-ISL97650 Datasheet
337Kb / 20P
   4-Channel Integrated LCD Supply
ISL97650 INTERSIL-ISL97650 Datasheet
353Kb / 20P
   4-Channel Integrated LCD Supply
ISL97650ARTZ-T INTERSIL-ISL97650ARTZ-T Datasheet
337Kb / 20P
   4-Channel Integrated LCD Supply
ISL97650ARTZ-T INTERSIL-ISL97650ARTZ-T Datasheet
353Kb / 20P
   4-Channel Integrated LCD Supply
ISL97650ARTZ-TK INTERSIL-ISL97650ARTZ-TK Datasheet
337Kb / 20P
   4-Channel Integrated LCD Supply
More results

Descripción similar - ISL97650

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
Renesas Technology Corp
ISL97651 RENESAS-ISL97651 Datasheet
845Kb / 20P
   4-Channel Integrated LCD Supply
logo
Intersil Corporation
ISL97650B INTERSIL-ISL97650B Datasheet
414Kb / 20P
   4-Channel Integrated LCD Supply
ISL97650 INTERSIL-ISL97650 Datasheet
337Kb / 20P
   4-Channel Integrated LCD Supply
ISL97650B INTERSIL-ISL97650B Datasheet
414Kb / 20P
   4-Channel Integrated LCD Supply
ISL97651 INTERSIL-ISL97651 Datasheet
330Kb / 19P
   4-Channel Integrated LCD Supply
logo
Renesas Technology Corp
ISL97650B RENESAS-ISL97650B Datasheet
921Kb / 20P
   4-Channel Integrated LCD Supply
logo
Intersil Corporation
ISL97650 INTERSIL-ISL97650_09 Datasheet
353Kb / 20P
   4-Channel Integrated LCD Supply
logo
Renesas Technology Corp
ISL98604 RENESAS-ISL98604 Datasheet
1Mb / 28P
   6-Channel Integrated LCD Supply
logo
Intersil Corporation
ISL97653A INTERSIL-ISL97653A Datasheet
752Kb / 18P
   5-Channel Integrated LCD Supply
ISL97653A INTERSIL-ISL97653A_08 Datasheet
530Kb / 18P
   5-Channel Integrated LCD Supply
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20


Datasheet Descarga

Go To PDF Page


Enlace URL




Política de Privacidad
ALLDATASHEET.ES
¿ALLDATASHEET es útil para Ud.?  [ DONATE ] 

Todo acerca de Alldatasheet   |   Publicidad   |   Contáctenos   |   Política de Privacidad   |   Intercambio de Enlaces   |   Lista de Fabricantes
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com