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PDF R7710 Data sheet ( Hoja de datos )
| Número de pieza | R7710 | |
| Descripción | Primary Feedback CC/CV PWM Controller | |
| Fabricantes | RichPower | |
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Hay una vista previa y un enlace de descarga de R7710 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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Preliminary
R7710
Primary Feedback CC/CV PWM Controller for Flyback
Converters
General Description
Features
The R7710 is a current mode PWM controller which
includes primary side voltage feedback technology. It
controls the output voltage and current accurately without
shunt regulator and photo coupler on secondary side to
save the part counts and cost.
R7710 is designed especially for low power purpose as
charger of cell phones, PDAs..., and etc. Fruitful
protections, such as UVP, OVP, brownout, current limit
and OTP, minimize the external components. Ultra low
start-up current and operating current of R7710 achieves
the low power consumption in standby mode. The green
mode operation of R7710 also meets the latest efficiency
regulations.
Primary Side CC/CV Control
Current Mode Control
Internal PWM Leading-Edge Blanking
Green-Mode PWM
Cycle-by-Cycle Current Limiting
UVLO at 14V/8V
OVP 27.5V on VDD Pin
Brownout Protection
Output Over Voltage Protection
Built-in Jittering Frequency
Soft Driving for EMI
Programmable Cable Compensation
Internal Over Temperature Protection
Ordering Information
R7710
Package Type
E : SOT-23-6
Operating Temperature Range
G : Green (Halogen Free with Comme-
rcial Standard)
Applications
Switching AC/DC Adaptor and Battery Charger
DVD Open Frame Power Supply
STB
Cell Phone Charger
Networking Power Supply
Note :
Richpower Green products are :
RoHS compliant and compatible with the current
requirements of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
Marking Information
For marking information, contact our sales representative
directly or through a Richpower distributor located in your
area, otherwise visit our website for detail.
Pin Configurations
(TOP VIEW)
CS COMP DMAG
65 4
23
GATE GND VDD
SOT-23-6
R7710-02P Nov 2009
1
1 page  
Preliminary
R7710
Parameter
Frequency Reduction Ending
Threshold
Burst Mode Frequency
Burst Mode Threshold
Maximum Duty Cycle
Frequency Variation Versus VDD
Deviation
Frequency Variation Versus Temp.
Deviation
Symbol
Conditions
VFM_ L
fBURST
VTH_BURST Following VCOMP level
DCYMAX
fDV VDD = 9V to 26V
fDT TA = -40°C ~105°C (Note 5)
Jittering Frequency Range
Protection Section
fJITTER
VOUT Over Voltage
VOUT Under Voltage
Max Sourcing Current of DMAG
Protection Delay
OVoP
UVoP
IDMAG
Count of Clock Cycle
OTP Threshold
OTP Hysteresis
TOTP
TOTP_HYS
Current-Sense Section
Constant Current Control
Current Limit Latch Threshold
Leading Edge Blanking Time
Propagation Delay Time
Compensation Section
VCS * TOFF
VCSTH_L
TLEB
(Note 5)
TPD (Note 5)
Gain of Transconductance Amplifier Gm
Maximum Sourcing Current
I_Gm
VSENSE = 2.5V
Reference Voltage
VREF
Min Typ Max Unit
-- 1.5 -- V
250 500 750 Hz
-- 1.1 -- V
70 75 80 %
-- -- 5 %
-- -- 5 %
-- ±4 -- %
2.9 3.1 3.3 V
0.5 0.6 0.7 V
1500 --
-- µA
-- 2048 -- --
-- 150 -- °C
-- 15 -- °C
7.125
--
300
--
7.5 7.875 µs.V
1.7 -- V
320 450 ns
100 -- ns
-- 100 -- µA/V
-- 75 -- µA
2.45 2.5 2.55 V
Note 1. Stresses listed as the above “ Absolute Maximum Ratings” may cause permanent damage to the device. These are
for stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the
operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended
periods may remain possibility to affect device reliability.
Note 2. θJA is measured in the natural convection at TA = 25°C on a low effective thermal conductivity test board.
Note 3. Devices are ESD sensitive. Handling precaution is recommended.
Note 4. The device is not guaranteed to function outside its operating conditions.
Note 5. fDT, leading edge blanking time and internal propagation delay time are guaranteed by design.
R7710-02P Nov 2009
5
5 Page 
Outline Dimension
Preliminary
D
CB
H
L
b
A
e
A1
R7710
Symbol
A
A1
B
b
C
D
e
H
L
Dimensions In Millimeters
Min Max
0.889
1.295
0.000
0.152
1.397
1.803
0.250
0.560
2.591
2.997
2.692
3.099
0.838
1.041
0.080
0.254
0.300
0.610
Dimensions In Inches
Min Max
0.031
0.051
0.000
0.006
0.055
0.071
0.010
0.022
0.102
0.118
0.106
0.122
0.033
0.041
0.003
0.010
0.012
0.024
SOT-23-6 Surface Mount Package
RICHPOWER MICROELECTRONICS
CORP.
Headquarter
Room 2102, 1077 ZuChongZhi Road, Zhang Jiang
Hi-TechPark, Pudong New Area, Shanghai, China
Tel: (8621)50277077 Fax: (8621)50276966
RICHPOWER MICROELECTRONICS
CORP.
Taipei Office (Marketing)
8F, No. 137, Lane 235, Paochiao Road, Hsintien City
Taipei County, Taiwan, R.O.C.
Tel: (8862)89191466 Fax: (8862)89191465
Information that is provided by Richpower Technology Corporation is believed to be accurate and reliable. Richpower reserves the right to make any change in circuit
design, specification or other related things if necessary without notice at any time. No third party intellectual property infringement of the applications should be
guaranteed by users when integrating Richpower products into any application. No legal responsibility for any said applications is assumed by Richpower.
R7710-02P Nov 2009
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet R7710.PDF ] | |
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