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PDF FP5139 Data sheet ( Hoja de datos )
| Número de pieza | FP5139 | |
| Descripción | BOOST CONVERT CONTROL IC | |
| Fabricantes | Feeling Technology | |
| Logotipo |  |
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Technology
FP5139
BOOST CONVERT CONTROL IC
GENERAL DESCRIPTION
The FP5139 is a boost topology switching regulator control IC for battery-used applications
field. The FP5139 includes a totem-pole single output stage for driving NPN transistor or
N-MOS, high precision reference (0.5V) for comparing output voltage with feedback amplifier,
an internal dead-time control for controlling the minimum duty cycle, programmable soft start
with short circuit protection function and logic level control for operating mode or standby
mode.
FEATURES
Wide supply voltage operating range: 1.8 to 15V
Reference voltage precision: 4%
Low current consumption: Operation Mode 5.5mA
Standby-by Mode 1µA
High speed oscillator frequency: 1MHz max.
Programmable Soft Start function (SS)
Short Circuit Protection function(SCP)
Totem-pole output with adjustable on/off current
(for NPN transistors or n-channel MOSFET)
Logic level control stand-by mode function
Package: SOP8/TSSOP8/MSOP8
SOP8
TYPICAL APPLICATION
Digital Camera
PDA
Portable Equipment
Website: http://www.feeling-tech.com.tw
Rev0.2 Nov. 25, 2005
P1/FP5139
1 page  
Technology
FP5139
DC ELECTRICAL CHARACTERISTICS
VCC=2V,TA=25
Under Voltage Lock-Out section (U.V.L.O.)
PARAMETER
SYMBOL TEST CONDITIONS
Low threshold voltage
Upper threshold voltage
VLOW
VUPPER
--
--
MIN.
-
1.1
TYP.
-
1.3
MAX.
0.9
1.5
UNIT
V
V
Soft Start section (S.S.)
PARAMETER
Input source current
Soft start threshold voltage
SYMBOL
ISS
VSST
TEST CONDITIONS
VSCP= 0V
--
MIN.
-1.5
0.8
TYP.
-1.0
0.9
MAX.
-0.7
1.0
UNIT
A
V
Short Circuit Protection section (S.C.P.)
PARAMETER
SYMBOL TEST CONDITIONS
Input source current
S.C.P. threshold voltage
ISCP
VSCP
VSCP= 0V
--
MIN.
-1.5
0.7
TYP.
-1.0
0.8
MAX. UNIT
-0.7 A
0.9 V
Oscillator section
PARAMETER
Oscillation frequency
Frequency change with
voltage
Frequency change with
temperature
SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNIT
f RT=3.0KΩ,CT=270pF 400 500 600 KHz
∆f / ∆V
VCC=2V to 15V
- 2 10 %
∆f / ∆T
Ta = 0 to 85
- 5 -%
Idle Period Adjustment section
PARAMETER
SYMBOL TEST CONDITIONS MIN.
Maximum duty cycle
TDUTY
RT=3.0kΩ, CT=270pF,
VFB=0.8V
-
TYP.
92
MAX. UNIT
98 %
Total device section
PARAMETER
Stand-by current
Average supply current
SYMBOL
ISTANDBY
IAVE
TEST CONDITIONS
Pin4 is open or VCC
RB=390Ω,VCC=0~15V
MIN.
-
-
TYP.
-
5.0
MAX. UNIT
1 µA
10 mA
Website: http://www.feeling-tech.com.tw
Rev0.2 Nov. 25, 2005
P5/FP5139
5 Page 
Technology
FP5139
Output transistor
The FP5139 has a totem-pole transistor with a 40mA source/sink current rating to drive an
external NPN transistor or NMOS directly. The driving current capability depends on a resistor
R that is connected to BR/CTL pin (Pin4) of FP5139. (see fig. 14)
FP5139
Control R2
BR/CTL
R1
Q1
Figure 13. Output transistor driving control circuit
BR/CTL pin can also use to control the output of FP5139 for disable or enable function of
system.
Control Pin
Low
High
Q1 BR/CTL Pin Output Transistor Function
Off Open
Disable
On Bias Current
Enable
Mode
Stand-by
Operation
Website: http://www.feeling-tech.com.tw
Rev0.2 Nov. 25, 2005
P11/FP5139
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet FP5139.PDF ] | |
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