|
|
PDF H6850NF Data sheet ( Hoja de datos )
| Número de pieza | H6850NF | |
| Descripción | Novel Low Cost Green-Power PWM Controller | |
| Fabricantes | Hi-Sincerity | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de H6850NF (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
|
No Preview Available !
HI-SINCERITY
MICROELECTRONICS CORP.
Spec. No. : IC200912
Issued Date : 2009.07.15
Revised Date :
Page No. : 1/13
H6850 Series
Novel Low Cost Green-Power PWM Controller
With Low EMI Technique
Feature
z Low Cost, PWM&PFM&CRM (Cycle
Reset Mode)
z Low Start-up Current (about 3μA)
z Low Operating Current (about 1.2mA)
z Current Mode Operation
z Under Voltage Lockout (UVLO)
z Built-in Synchronized Slope
Compensation
z Built-in Low EMI Technique
z Programmable PWM Frequency
z Audio Noise Free Operation
z Leading edge Blanking on Sense input
z Constant output power limiting for
universal AC input Range
z SOT-23-6 L 、SOP8 and DIP-8 Pb-Free
Packaging
z Good Protection Coverage With Auto
Self-Recovery
z Compatible with SG6848 (6849) /
SG5701/SG5848/LD7535 (7550) /
OB2262 (2263)/OB2278（2279）
z Complete Protection with
¾ Soft Clamped GATE output voltage
18.0V
¾ VDD over voltage protect 34.0V
¾ Cycle-by-cycle current limiting
¾ Output SCP (Short circuit Protection)
¾ Output OLP (Over Load Protection)
¾ High-Voltage CMOS Process with ESD
Applications
z Switching AC/DC Adaptor
z Battery Charger
z Open Frame Switching Power Supply
z Standby Power Supplies
z Set-Top Box Power Supplies
z 384X Replacement
General Description
The H68 50 is a highly integrated low cost
current mode PWM controller, which is ideal
for small power cur rent mode of of fline
AC-DC fly- back converter applic ations.
Making use of external resistors, the IC
changes the operating frequency and
automatically enters the PFM/CRM ( Cycle
Reset Mode) und er light-load/zer o-load
conditions. This can minimize standby
power consumption and achieve powe r-
saving functions. With a very lo w st art-up
current, the H685 0 could use a large value
start-up resistor (2MΩ).
Built-in synchronized slo pe compens ation
enhances the st ability of the syste m and
avoids sub-harmonic oscillation. D ynamic
peak current limiting circuit minimizes output
power chang e caused by delay time of the
system over a universal AC input range.
Leading edge blanking circuit on current
sense input could remove the signal glitch
due to snubber circuit diode reverse
recovery and thus greatly reduces the
external component count and system cost
in the design. Cycle-by-Cycle current
limiting ensures safe operation even during
short-circuit.
Excellent EMI performance is achieved
built-in soft driver and low EMI technique.
The H68 50 offers perfect protection like
OVP(Over Voltage Prote ction)、OLP(Over
Load Protection) 、 SCP(Short circuit
protection)、OTP、Sense Fault Protection
and OCP(Over current protection). The
H6850’s output driver is soft clamped to
maximum 18.0V to protect the power
MOSFET. H6850 is offered in SOT-23-6L,
SOT-8 and DIP-8 packages.
H6850P, H6850S,H6850NF
HSMC Product Specification
http://www.Datasheet4U.com
1 page  
HI-SINCERITY
MICROELECTRONICS CORP.
Spec. No. : IC200804
Issued Date : 2008.09.19
Revised Date :
Page No. : 5/13
RCS Input Impedance
Leading edge blanking time
TLEB
( LEB )
Oscillator (RI Pin)
FOSC Normal Frequency
FPFM
PFM Frequency
DCMAX_W Maximum Duty Cycle PWM
DCMAX_F Maximum Duty Cycle PFM
ΔFTEMP Frequency Temp. Stability
TBLANK Leading-Edge Blanking Time
FJITTER Frequency jitter
RI=100K
40 KΩ
300 nS
RI=100Kohm
RI=100Kohm
RI=100Kohm
RI=100Kohm
-30-100℃
RI=100Kohm
60 65 70 KHz
22 KHZ
78 %
78 %
5%
300 nS
-4 4 %
GATE Drive Output (GATE Pin)
Output Low Level
VOL
Output High Level
VOH
TR1
TF1
TR2
TF2
TR3
TF3
TR4
TF4
VGCLAMP
Rising Time
Falling Time
Rising Time
Falling Time
Rising Time
Falling Time
Rising Time
Falling Time
Output Clamp Voltage
Low EMI technique
fEMI
∆f_osc
Low EMI frequency
Frequency modulation range
/Base frequency
VDD=16V,
IO=20mA
VDD=16V,
IO=20mA
CL=500pF
CL=500pF
CL=1000pF
CL=1000pF
CL=1500pF
CL=1500pF
CL=2000pF
CL=2000pF
VDD=20V
0.8 V
10
123
71
248
116
343
153
508
209
18.0
V
ns
ns
ns
ns
ns
ns
ns
ns
V
RI=100Kohm
RI=100Kohm
65
-3
KHz
3%
H6850P, H6850S,H6850NF
HSMC Product Specification
5 Page 
HI-SINCERITY
MICROELECTRONICS CORP.
PACKAGE DEMENSIONS
DIP-8L
Spec. No. : IC200804
Issued Date : 2008.09.19
Revised Date :
Page No. : 11/13
Dimensions
Symbol
A
A1
A2
b
b1
D
E
E1
e
L
eB
θ˚
Min.
0.381
3.175
9.017
6.223
2.921
8.509
0˚
Millimeters
Typ.
Max.
5.334
3.302
1.524
0.457
9.271
7.620
6.350
2.540
3.302
9.017
7˚
3.429
10.160
6.477
3.810
9.525
15˚
H6850P, H6850S,H6850NF
Min.
0.015
0.125
0.355
0.245
0.115
0.335
0˚
Inches
Typ.
Max.
0.210
0.130
0.060
0.018
0.365
0.300
0.250
0.100
0.130
0.355
7˚
0.135
0.400
0.255
0.150
0.375
15˚
HSMC Product Specification
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet H6850NF.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| H6850NF | Novel Low Cost Green-Power PWM Controller | Hi-Sincerity |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |