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PDF RZ1510 Data sheet ( Hoja de datos )
| Número de pieza | RZ1510 | |
| Descripción | PWM Control 3A Step-Down Converter | |
| Fabricantes | Wuxi Microelectronics | |
| Logotipo |  |
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RZ1510
PWM Control 3A Step-Down Converter
Features
- Input voltage: 3.6V to 20V.
- Output voltage: 0.8V to VCC.
- Duty ratio: 0% to 100% PWM control
- Oscillation frequency: 300KHz typ.
- Soft-start, Current Limit, Enable function
- Thermal Shutdown function
- Built-in internal SW P-channel MOS
- SOP8 Pb-Free Package.
Applications
- PC Motherboard
- LCD Monitor
- Graphic Card
- DVD-Video Player
- Telecom Equipment
- ADSL Modem
- Printer and other Peripheral Equipment
- Microprocessor core supply
- Networking power supply
Pin Assignments
FB 1
EN 2
RZ1510
OCSET 3
Vcc 4
8 Vss
7 Vss
6 Output
5 Output
General Description
RZ1510 consists of step-down switching regulator
with PWM control. These devices include a
reference voltage source, oscillation circuit, error
amplifier, internal PMOS and etc.
RZ1510 provides low-ripple power, high
efficiency,and excellent transient characteristics.
The PWM control circuit is able to vary the duty
ratio linearly from 0 up to 100%. This converter
also contains an error amplifier circuit as well as a
soft-start circuit that prevents overshoot at startup.
An enable function, an over current protect
function and a short circuit protect function are
built inside, and when OCP or SCP happens, the
operation frequency will be reduced from 300KHz
to 30KHz. Also, an internal compensation block is
built in to minimum external component count.
With the addition of an internal P-channel Power
MOS, a coil, capacitors, and a diode connected
externally, these ICs can function as step-down
switching regulators. They serve as ideal power
supply units for portable devices when coupled
with the SOP8 mini-package, providing such
outstanding features as low current consumption.
Since this converter can accommodate an input
voltage up to 20V, it is also suitable for the
operation via an AC adapter.
Pin Descriptions
Name
FB
EN
OCSET
VCC
Output
Vss
Pin
1
2
3
4
56
78
Description
Feedback pin.
Power-off pin
H: Normal operation
(Step-down operation)
L: Step-down operation
stopped
(All circuits deactivated)
Add an external resistor to set
max output current.
IC power supply pin
Switch Pin. Connect external
inductor/diode here. Minimize
trace area at this pin to reduce
EMI.
GND Pin
Tel. 0510-85898501 18061979821 Fax. 0510-85898500
1/7 Rev. 1.0 2009-10
1 page  
RZ1510
PWM Control 3A Step-Down Converter
Typical Performance Characteristics (Continued)
RZ1510 Vout Ripple
(Vin=12V; Vout=3.3V; Iout=0.1A)
RZ1510 Vout Ripple
(Vin=12V; Vout=3.3V; Iout=3A)
Test Circuit
Open
Output
Vcc
OCSET
Open
FB
A EN
Vss
Enable function test
A Vcc Output FB
OCSET
EN Vss
Feedback function test
Vcc Output
OCSET
FB
EN Vss
V
Operation function test
Tel. 0510-85898501 18061979821 Fax. 0510-85898500
5/7 Rev. 1.0 2009-10
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet RZ1510.PDF ] | |
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