Technology
FP5138
BOOST CONVERT CONTROL IC
GENERAL DESCRIPTION
The
FP5138
is a boost topology switching regulator control IC for battery-used applications
field. The
FP5138
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(EP)
SOP8
TS S O P 8
TYPICAL APPLICATION
˙Digital
Camera
˙PDA
˙Portable
Equipment
MS O P 8
Website:
http://www.feeling-tech.com.tw
Rev0.6 August 17, 2006
P1/FP5138
Technology
FUNCTIONAL BLOCK DIAGRAM
3
7
FP5138
Reference
voltage supply
0.8V
0.1V
Sawtooth wave
oscillator
1.25V
1
+
0.5V
8
36
36k
Ω
Error Amp.
500KΩ
0.1V
PWM
Comp.
+
+
+
DTC 0.6V
Output drive
control circuit
0.22V
5
30
Ω
30k
Soft start &
SCP circuit
6
2
4
MARK VIEW
Name No.
FB
1
SCP
2
3
4
5
6
7
8
PIN DESCRIPTION
I/O
Description
I Error amplifier inverting input pin
Connected a capacitor
I
Soft start and SCP function pin
P IC power supply
I Output current setting and control pin
O Totem-pole output
P IC ground
Capacitor and resistor connected for
I
the frequency of oscillation
O Error amplifier compensation output
1
2
8
7
3
6
5
4
V
CC
BR/CTL
OUT
GND
OSC
COMP
FP513 8
Website:
http://www.feeling-tech.com.tw
-
L
Rev0.6 August 17, 2006
P2/FP5138
Technology
ORDER INFORMATION
Part Number
FP5138D-LF
FP5138DR-LF
FP5138W-LF
FP5138WR-LF
FP5138X-LF
FP5138XR-LF
Operating Temperature
-10°C ~ +85°C
-10°C ~ +85°C
-10°C ~ +85°C
-10°C ~ +85°C
-10°C ~ +85°C
-10°C ~ +85°C
Package
SOP8
SOP8
TSSOP8
TSSOP8
SOP8-EXPOSED PAD
SOP8-EXPOSED PAD
FP5138
Description
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
IC DATE CODE DISTINGUISH
FP5138
-
L
Lead Free
Lot Number
Mass Production Version
Per Half Month
Year
FOR EXAMPLE:
January
February
March
A (Front Half Month), B (Last Half Month)
C, D
E, F
------------And so on
Lot Number is the last two numbers
For Example:
A3 3 11 C6
2
Lot Number
Website:
http://www.feeling-tech.com.tw
Rev0.6 August 17, 2006
P3/FP5138
Technology
ABSOLUTE MAXIMUM RATINGS
FP5138
+15V
Power supply voltage---------------------------------------------------------------------------
Output source current--------------------------------------------------------------------------
-50mA
Output sink current-----------------------------------------------------------------------------
+50mA
Allowable dissipation
SOP8
Ta≦+25℃-------------------------------------------------------------------------
570mW
400mW
400mW
600mW
MSOP8 Ta≦+25℃------------------------------------------------------------------------
TSSOP8 Ta≦+25℃-------------------------------------------------------------------------
SOP8-EXPOSED PAD
Ta≦+25℃-------------------------------------------------
Operating temperature----------------------------------------------------------------------
-10℃½+85℃
Storage temperature------------------------------------------------------------------------
-55℃½+125℃
Junction breakdown Temperature---------------------------------------------------------
+125℃
SOP8 Lead Temperature (soldering, 10 sec) -------------------------------------------
+260℃
TSSOP8 Lead Temperature (soldering, 10 sec) ---------------------------------------
+260℃
MSOP8 Lead Temperature (soldering, 10 sec) ----------------------------------------
+260℃
260℃/sec
260℃
210℃
180℃
+0.23℃/sec
-1.2℃/sec
+3.4℃/sec
25℃
15s
60s
190s
IR Re-flow Soldering Curve
280s
Website:
http://www.feeling-tech.com.tw
Rev0.6 August 17, 2006
P4/FP5138
Technology
Under Voltage Lock-Out section (U.V.L.O.)
PARAMETER
Low threshold voltage
Upper threshold voltage
SYMBOL
V
LOW
V
UPPER
TEST CONDITIONS
--
--
FP5138
MIN.
-
1.1
TYP.
-
1.3
MAX.
0.9
1.5
UNIT
V
V
DC ELECTRICAL CHARACTERISTICS
(Ta=25℃,V
CC
=2V, unless otherwise noted)
Soft Start section (S.S.)
PARAMETER
Input source current
Soft start threshold voltage
SYMBOL
I
SS
V
SST
TEST CONDITIONS
V
SCP
= 0V
--
MIN.
-1.5
0.8
TYP.
-1.0
0.9
MAX.
-0.7
1.0
UNIT
μA
V
Short Circuit Protection section (S.C.P.)
PARAMETER
Input source current
S.C.P. threshold voltage
SYMBOL
I
SCP
V
SCP
TEST CONDITIONS
V
SCP
= 0V
--
MIN.
-1.5
0.7
TYP.
-1.0
0.8
MAX.
-0.7
0.9
UNIT
μA
V
Oscillator section
PARAMETER
Oscillation frequency
Frequency change with
voltage
Frequency change with
temperature
SYMBOL
f
Δf
/
ΔV
TEST CONDITIONS
R
T
=3.0KΩ,C
T
=270pF
V
CC
=2V to 15V
MIN.
400
-
TYP.
500
2
MAX.
600
10
UNIT
KHz
%
Δf
/
ΔT
Ta = 0℃to 85℃
-
5
-
%
Idle Period Adjustment section
PARAMETER
Maximum duty cycle
SYMBOL
T
DUTY
TEST CONDITIONS
R
T
=3.0kΩ, C
T
=270pF,
V
FB
=0.8V
MIN.
75
TYP.
-
MAX.
85
UNIT
%
Total device section
PARAMETER
Stand-by current
Average supply current
SYMBOL
I
STANDBY
I
AVE
TEST CONDITIONS
Pin4 is open or V
CC
R
B
=390Ω,V
CC
=0~20V
MIN.
-
-
TYP.
-
5.0
MAX.
1
10
UNIT
μA
mA
Website:
http://www.feeling-tech.com.tw
Rev0.6 August 17, 2006
P5/FP5138
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