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PDF AP3700E Data sheet ( Hoja de datos )
| Número de pieza | AP3700E | |
| Descripción | LOW POWER PWM CONTROLLER | |
| Fabricantes | BCD | |
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Data Sheet
LOW POWER PWM CONTROLLER FOR OFF-LINE BATTERY CHARGER
General Description
Features
AP3700E
The AP3700E is a green-mode pulse width modulation
(PWM) controller. It is specially designed for low
power applications such as off-line battery chargers,
where the needs for low standby power, space saving
and low cost are all required. In a battery charger rated
5V/0.8A, the maximum standby power is only
0.18Watt.
In normal operation, the AP3700E switches on and off
at a fixed switching frequency of 60 kHz. With a cur-
rent limit capability of 460mA, the AP3700E can
directly drive the emitter of high voltage NPN transis-
tor. When output power falls below a given level, the
IC enters skip cycle mode to reduce power consump-
tion.
The AP3700E also features under-voltage lockout,
over-current and short circuit protections.
· Current Mode Control with Skip Cycle Capability
· Lower Operating Current: 0.45mA
· Fixed Switching Frequency: 60 kHz
· Frequency Dithering for Low EMI: ±2.5kHz
· Under-Voltage Lockout Protection
· Over-Current Protection
· Internal Short Circuit Protection
· Higher Output Voltage at OUT Terminal
· Low Total Cost Solution
Applications
· Battery Chargers
· Off-Line Power Supplies
The AP3700E is available in TO-92 package.
May 2008 Rev. 1. 1
TO-92
(Buck Packing)
TO-92
(Ammo Packing)
Figure 1. Package Types of AP3700E
BCD Semiconductor Manufacturing Limited
1
1 page  
Data Sheet
LOW POWER PWM CONTROLLER FOR OFF-LINE BATTERY CHARGER AP3700E
Electrical Characteristics
(VCC=4.5V, TJ=25oC, unless otherwise specified.)
Parameter
Symbol
Conditions
Min Typ Max Unit
UVLO SECTION
Start-up Voltage
VTH (ST)
5.5 5.75 5.95
V
Minimal Operating Voltage VOPR(min)
STANDBY CURRENT SECTION
Start-up Current (Note 3)
Operating Current
VCC Zener Voltage
Dynamic Impedance
INTERNAL OSCILLATOR
IST
ICC(OPR)
VZ
RVCC
VCC=4.5V
ICC=10mA
VCC=3.8 to 4.8V
Switching Frequency
Frequency dithering
fSW
Temperature Stability
DRIVE OUTPUT SECTION
-40 to 85oC
3.6 3.8 4.0
V
0.22 0.45 mA
0.45 0.7
6 6.3
V
18 kΩ
50 60 75 kHz
±2 ±2.5 ±3 kHz
5 10 %
OUT Turn-on Voltage
OUT Turn-off Voltage
Rise Time
Fall Time
Maximum Duty Cycle
Minimum Duty Cycle
Driver OUT On-Resistance
Switch Off Current (OUT)
Effective Current Limit
OUT Current Coefficient
VOUT(ON)
VOUT(OFF)
TR
TF
DMAX
CL=1nF, 15Ω pull-up
CL=1nF, 15Ω pull-up
VOPR(min) + 0.2V
ROUT
ILIM
GA
IOUT=0.06A
Driver off, VOUT=10V
VCC = VOPR+0.1V
9.5 12
V
5 5.5 6.5 V
60
ns
30
67 75 84 %
3
3Ω
20 40 μA
460 mA
-0.3 A/V
Note 3: AP3700E is an emitter drive controller, the PWM controller will start up only when the voltage on the OUT pin rises
up to its threshould value.
May 2008 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
5
5 Page 
Data Sheet
LOW POWER PWM CONTROLLER FOR OFF-LINE BATTERY CHARGER
Mechanical Dimensions
AP3700E
TO-92 (Ammo Packing)
Unit: mm(inch)
1.100(0.043)
1.400(0.055)
3.430(0.135)
MIN
0.360(0.014)
0.510(0.020)
0.000(0.000)
0.380(0.015)
Φ 1.600(0.063)
MAX
4.400(0.173)
4.700(0.185)
1.270(0.050)
Typ
4.500(0.177)
5.500(0.217)
2.540(0.100)
Typ
0.380(0.015)
0.550(0.022)
May 2008 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet AP3700E.PDF ] | |
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