ETC FB5139B

FP5139B
Asynchronous Boost Controller
General Description
The FP5139B is a boost topology switching regulator control IC for battery-powered applications.
The FP5139B includes a totem-pole single output stage for driving NPN transistor or N-MOS, high
precision reference voltage(0.5V) to compare output voltage with feedback amplifier, an internal duty
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
 Precision Reference Voltage: 0.5V ±2%
 Low Current Consumption: 5.5mA in Operation Mode
 Low Current Consumption: 1μA in Standby Mode
 High Oscillator Frequency: 1MHz max.
 Totem-Pole Output with Adjustable ON / OFF Current (for NPN Transistors or n-Channel MOSFET)
 Logic Level Control Stand-by Mode Function
 Programmable Soft Start Function (SS)
 Short Circuit Protection Function (SCP)
 Package: SOP-8L, TSSOP-8L and MSOP-8L
Applications
 Digital Camera
 PDA
 Portable Equipment
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 1.0
1/18
FP5139B
Function Block Diagram
OSC
VCC
Reference
voltage supply
Sawtooth wave
oscillator
0.6V
0.1V
1.25V
FB
-
OUT
0.1V
PWM
- Comp.
+
+
+
36k
+
Error Amp.
500
0.5V
30k
Output drive
control circuit
DTC 0.6V
0.22V
COMP
Soft Start SCP
GND
BR /
CTL
SCP
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
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Rev. 1.0
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2/18
FP5139B
Pin Descriptions
SOP-8L
Name
FP5139
9Fa-86L
TSSOP-8L
No. I / O
FB
1
I
SCP
2
I
Description
VCC
3
P
Error Amplifier Inverting Input
Soft Start and SCP Function
Connect a Capacitor to this pin
IC power supply
BR / CTL
4
I
Output Current Setting and Control
OUT
5
O
Totem-Pole Output
GND
6
P
OSC
7
I
COMP
8
O
IC Ground
Oscillator Output: Connect Capacitor and
Resistor to this pin for Frequency Adjustment
Error Amplifier Compensation Output
MSOP-8L
FP5139
-
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Rev. 1.0
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3/18
FP5139B
Marking Information
SOP-8L
FP5139
-
Halogen Free
Lot Number
Internal ID
Per-Half Month
Year
TSSOP-8L
FP5139
9Fa-86L
Halogen Free
Lot Number
Internal ID
Per-Half Month
Year
MSOP-8L
FP5139
-
Halogen Free
Lot Number
Internal ID
Per-Half Month
Year
Halogen Free: Halogen free product indicator
Lot Number: Wafer lot number’s last two digits
For Example: 132386TB  86
Internal ID: Internal Identification Code
Per-Half Month: Production period indicated in half month time unit
For Example: January → A (Front Half Month), B (Last Half Month)
February → C (Front Half Month), D (Last Half Month)
Year: Production year’s last digit
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Rev. 1.0
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4/18
FP5139B
Ordering Information
Part Number
Operating Temperature
Package
MOQ
Description
FP5139BDR-LF
-10°C ~ +85°C
SOP-8L
2500EA
Tape & Reel
FP5139BWR-LF
-10°C ~ +85°C
TSSOP-8L
2500EA
Tape & Reel
FP5139BTR-LF
-10°C ~ +85°C
MSOP-8L
2500EA
Tape & Reel
Absolute Maximum Ratings
Max.
Unit
15
V
Output Source Current
-50
mA
Output Sink Current
50
mA
SOP-8L, TA≦+25℃
570
mW
MSOP-8L, TA≦+25℃
400
mW
TTSOP-8L, TA≦+25℃
400
mW
+125
℃
+260
℃
+260
℃
+260
℃
Parameter
Symbol Conditions
Power Supply Voltage
Allowable Power Dissipation
Storage Temperature
Lead Temperature
Min.
VIN
-55
SOP-8L, (soldering, 10
sec)
TSSOP-8L, (soldering, 10
sec)
MSOP-8L, (soldering, 10
sec)
Typ.
Suggested IR Re-flow Soldering Curve
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Rev. 1.0
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5/18
FP5139B
Recommended Operating Conditions
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
Supply Voltage
1.8
15
V
Operating Temperature
-10
+85
℃
DC Electrical Characteristics (VCC= +2V, TA=25℃, unless otherwise noted)
Parameter
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
0.9
V
Under Voltage Lock-Out Section (UVLO)
Low Threshold Voltage
Upper Threshold Voltage
VLOW
VUPPER
1.1
1.3
1.5
V
-1.5
-1.0
-0.7
µA
0.8
0.9
1.0
V
-1.5
-1.0
-0.7
μA
0.7
0.8
0.9
V
400
500
600
KHz
Δf / ΔV VCC =2V to 15V
2
10
%
Δf / ΔT TA = 0℃ to 85℃
5
Soft Start Section (SS)
Input Source Current
Soft Start Threshold Voltage
ISS
VSCP= 0V
VSST
Short Circuit Protection Section (SCP)
Input Source Current
ISCP
SCP Threshold Voltage
VSCP
VSCP= 0V
Oscillator Section
Oscillation Frequency
Frequency Change With Voltage
Frequency Change With
Temperature
Idle Period Adjustment Section
Maximum Duty Cycle
f
TDUTY
RT =3.0KΩ, CT =270pF
RT =3.0kΩ, CT =270pF,
VFB =0.8V
92
%
98
%
1
μA
5.0
10
mA
500
520
mV
VCC =2V to 15V
5
20
mV
TA = -10℃ to 85℃
1
Total Device Section
Standby Current
Average Current Consumption
ISTANDBY Pin 4 is open or =VCC
IAVE
RB =390Ω, VCC =0~15V
Error Amplifier Section
Input Threshold Voltage
VT Change With Voltage
VT Change With Temperature
VFB
ΔVFB /
ΔV
ΔVFB /
ΔT
Input Bias Current
IB
Voltage Gain
Av
Frequency Bandwidth
BW
Output Voltage Swing Positive
VPOS
Output Voltage Swing Negative
Output Source Current
Output Sink Current
VCOMP =450mV
480
-1.0
AV =0 dB
0.78
VNEG
ISOURCE VCOMP =450 mV
ISINK
VCOMP =450 mV
24
-0.2
%
1.0
μA
100
V/V
6
MHz
0.87
V
0.05
0.2
V
-40
-24
μA
40
μA
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Rev. 1.0
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6/18
FP5139B
Parameter
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
Output Section
Output High Voltage
Output Saturation Voltage
Output Source Current
Output Sink Current
Internal Pull-Down Resistor
VOH1
RB=390Ω, IO=-15mA
1.0
1.2
V
VOH2
RB=750Ω, IO=-10mA,
VCC= 1.8V
0.8
1.0
V
VOL1
RB=390Ω, IO=15mA
0.1
0.2
V
VOL2
RB=750Ω, IO=10mA,
VCC= 1.8V
0.1
0.2
V
-40
-20
mA
30
40
-
mA
20
30
40
kΩ
0.15
0.22
0.3
V
0
μA
-45
μA
-0.1
mA
IOSOURCE RB=390Ω, Vo=0.9V
IOSINK
RB=390Ω, Vo=0.3V
RO
Output Current Setting / Control Section
Pin Voltage
VBR
Input Off Condition
IOFF
Input On Condition
ION
Pin Current Range
IBR
RB=390Ω
-20
-1.8
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Rev. 1.0
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7/18
FP5139B
Typical Operating Characteristics
(VCC=2V, TA= 25°C, unless otherwise noted)
Supply Voltage vs. Supply Current
Supply Voltage vs. Input Threshold Voltage
12
1.2
T A =25 ℃
R B =390 Ω
10
T A =25 ℃
1.0
8
0.8
6
0.6
4
0.4
2
0.2
0
0
8
4
12
16
0
20
0
4
8
16
20
Su pply Voltage V cc(V)
Su pply Voltage Vcc(V)
Figure 1
Figure 2
A mbient te mperature vs. Input threshod
voltage variation ratio
30
12
High Level Output
1.2
Vcc =2 V
Vcc=2 V
R B =390 Ω
T A =25 ℃
10
1.0
5
0.8
0
0.6
-5
0.4
-10
0.2
-15
25
0
25
50
75
100
0
0
-10
-20
-30
-4 0
-50
A m bie nt T e m peratu re T A ( ℃ )
High Level Output Current Iout (m A)
Figure 3
Figure 4
Low level output
6 00
B R / C TL pin Current vs. Output Source Current
-6 0
Vcc=2V
R B=390
T A =25 ℃
5 00
400
-40
3 00
-3 0
20 0
-20
100
-10
0
0
20
40
60
80
V cc=2 V
V OUT =0.9V
T A =25 ℃
-50
0
1 00
0
-0.4
-0.8
-1.2
-1.6
-2.0
B R / CT L pin current IBR (m A)
Lo w level output current Iout ( m A)
Figure 6
Figure 5
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Rev. 1.0
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8/18
FP5139B
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Rev. 1.0
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9/18
FP5139B
Function Description
Voltage Reference
A 1.25V regulator operating from VCC is used to power the FP5139B internal circuitry. An
internal resistive divider provides 0.5V reference for the error amplifier, Soft-start (0.9V typ.) and SCP
(0.8V typ.) circuits.
Error Amplifier
The error amplifier compares a sample of the DC-DC converter output voltage to the 0.5V
reference and generates an error signal for the PWM comparator. Output voltage of DC-DC converter
is setting with the resistor divider using the following equation (see figure12):
R1 

VOUT  1 
  0 .5
R
2

VOUT
R1
Error Amplifier
FB
36K
R2
0.5V
500
FP5139B
COMP
C1
Figure 12 Error Amplifier with Feedback resistance divider
Oscillator
The oscillator frequency can be set from 20KHz to 1MHz by connecting a resistor and a
capacitor at OSC pin of FP5139B to ground. The oscillator frequency can be determined by using the
graph shown in Figure 9.
The oscillator output is a sawtooth wave with a minimum value of approximately 0.1V and a
maximum value of approximately 0.6V. The PWM comparator compares the oscillator voltage with
error amplifier output voltage, internal maximum duty control voltage (0.6V typ.) and soft start setting
voltage. When the sawtooth wave voltage is lower than all of above three-output voltage, the output of
FP5139B is high (Turn on external NPN transistor or NMOS).
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Rev. 1.0
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10/18
FP5139B
Under Voltage Lockout (UVLO)
The under voltage lockout circuits turn the output off whenever the supply voltage drops too low
(approximately 0.9V at 25℃) for proper operation. A hysteresis voltage of 200mV eliminates false
triggering on noise and chattering.
Soft Start/ Short-circuit protection (SS / SCP)
The soft start is functional after power on. The interval of soft start time is determined by a
capacitor connected to SCP pin (pin 2). When soft start function finished, the internal soft start voltage
is setting high, but external SCP pin is setting low in order to change to short circuit detection /
protection function.
The time of soft start is:
TssmS   0.35  C F 
The short circuit protection is triggered when a heavy loading makes output voltage drop and
error amplifier output (COMP pin) is larger than VPOS (0.9V typ.). The SS pin capacitor will be charged
to the SCP threshold voltage (0.8V typ.), then FP5139B output is disabled (internal pull-low) and the
capacitor is discharged to low.
The time of short circuit protection is:
TscpmS   0.8  C F 
Output Transistor
The FP5139B has a totem-pole transistor with a 40mA source/sink current capability 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 FP5139B. (see figure 13)
FP5139
4
BR / CTL
R1
Control
R2
Q1
Figure 13 Output Transistor Driving Control Circuit
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Rev. 1.0
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11/18
FP5139B
BR / CTL pin can also use to control the output of FP5139B for disable or enable function of
system.
Control Pin
Q1
BR / CTL Pin
Output Transistor Function
Mode
Low
Off
Open
Disable
Stand-by
High
On
Bias Current
Enable
Operation
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Rev. 1.0
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12/18
FP5139B
Application Information
Vin 3V
L1
10uH
SM340A
IC1
1
2
3
C7
220uF
4
CA1
0.1uF
FB
COMP
SCP
OSC
VCC
GND
7
C1
0.1uF
6
BR/CTL OUT
R4
390
Q1
NPN
R3 0
5
R2
51k
C2
0.1uF
Q2
AP2306GN
C11
220uF
C8
0.1uF
PNP
Q5
R5
3.9k
Q4
NPN
ON/OFF Socket
R1
20k
8
FP5139
C5
0.1uF
Vout 9V/0.5A
D2
R6
3k
C6
330pF
Vin
R7 4.7k
1
2
SW1
Figure14 DC 3V to DC 9V Boost Converter Circuit
Vin 9~24V
L1
1
QA1
NPN
2
3
4
DA1
10V
CA1
1uF
C5
0.1uF
R4
390
FB
SCP
VCC
1
2
COMP
OSC
GND
BR/CTL OUT
D3
22uF
SR55
8
7
C1
0.1uF
6
Vout 12V/2A
R1
20k
Q1
NPN
R3 0
5
FP5139
Q4
NPN
ON/OFF Socket
Cs1
IC1
RA1
3k
C7
330uF
22uH
L2
Q2
AP9974AGH
22uH
R2
46k
C2
0.1uF
C4
470uF
C10
10uF
Q5
PNP
R5
3.9k
R6
2k
C6
470pF
Vin
R7 4.7k
SW1
Figure15 DC 9V~24V to DC 12V SEPIC Converter Circuit
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13/18
FP5139B
3
Q3
1
D2
C3
1uF
NPN BEC
Vout3
MOSFET P
2
3
R1
R
C4
1uF
1
C5
1uF
Q1
Q2
2
BAT54S/SOT_0
R2
R
R4
R5
R
2
R3
R
BAT54S/SOT_0
C2 0.1uF
3
1
D1
C1 0.1uF
Vout2
R6
R
R7
R
C6
1uF
3
2
D3
R8
R
1
D4
1
TL431
C8
1uF
2
3
TL431
R9
L1
Vin
33uH
L2
D5 SCD34
Q4
NPN
33uH
Vout1
R10
R
C9
1uF
IC1
2
Vin Socket
Vout2
1
2
1
2
CON1
CON2
Vot Socket3
1
2
1
2
CON3
CON4
OSC
VCC
GND
R12
7
51k 1%
C10
0.1uF
6
R13 0
Vin
C12
4
220uF/6.3V
Vot Socket1
Vout3
3
SCP
R11
8
COMP
C16
0.1uF
BR/CTL OUT
R14
C7
0.1uF
1k
Vout1
C11
Q5
MOSFET N GDS
1
R16
3k
C13
C14
100uF
FP5139
Q6
NPN 3904
ON/OFF Socket
Vin
5
3
Vot Socket2
FB
2
1
C15
0.1uF
100uF
R15
C17
3k 1%
470pF
R17 4.7k
1
2
SW1
Figure16 Charge Pump DC-DC Converter Circuit
R9
R8
56K
1.8K
R10
R11
33K
5.1K
V2
FB
R12
3.3K
L1
4
C2
104
C1
R7
+
C7
470pF
330uF
+
C4
0.47uF
3
CTL
4
SCP
Cosc
VCC
GND
CTL
OUT
7
C5
0.1uF
L4
5
Q3
AP2304
1
R6
0
10
CLS12
C6
6
FP5139
R5
220
3
+
33uH
C12
100uF/16V
+3.3V
+
BAT54RCLT1
3
2
L5
V4
D5 BAT54HT1
33uH
-7.5V
C14
100uF/16V
C15
47uF/16V
+
R1
Q2
2N3904
ON / OFF
33K
C16
1nF
R4
C3
270pF
R2
10K
R3
3K
Figure17 Flyback Multi-Output DC-DC Converter Circuit
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14/18
C11
47uF/16V
D4
9
V3
COMP
+
2
SCP
FB
33uH
C10
100uF/16V
8
2
COMP
8
C9
47uF/16V
BAT54RCLT1
U1
1
L3
7
1
D6
8.2
+15V
+
D3
6
5
33uH
C8
100uF/25V
V
5
+
FUSE
+
T1
18uH
L2
V1
2
V
F1
D2 BAT54HT1
(R9+R8)=17.48*R12
0.66*(R8+R9)=(R10+R11)
+
VCC
V3
C13
47uF/16V
FP5139B
Timing Waveform
COMP pin Voltage
Reference input for
SCP Comparator
Idle period setting voltage
Oscillator waveform
Soft-start setting voltage
OUT pin waveform
SS/SCP pin waveform
Output
Short
Circuit
Soft-start
ts
Control pin voltage
tpe
Output Short Circuit
Short Circuit Protection
IC Shutdown
Figure18 FP5139B Timing Diagram
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Rev. 1.0
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15/18
FP5139B
Package Outline
SOP-8L
UNIT: mm
Symbols
Min. (mm)
Max. (mm)
A
1.346
1.752
A1
0.101
0.254
A2
1.092
1.498
D
4.800
4.978
E
3.810
3.987
H
5.791
6.197
L
0.406
1.270
θ°
0°
8°
Notes:
1. Package dimensions are in compliance with JEDEC outline: MS-012 AA.
2. Dimension “D” does not include molding flash, protrusions or gate burrs.
3. Dimension “E” does not include inter-lead flash or protrusions.
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16/18
FP5139B
TSSOP-8L
UNIT: mm
Symbols
Min. (mm)
Max. (mm)
A
1.200
A1
0.050
0.150
A2
0.960
1.060
D
2.900
3.100
E
6.400 BSC
E1
4.300
4.500
L
0.450
0.750
θ°
0°
8°
Notes:
1. Package dimensions are in compliance with JEDEC outline: MO-153 AA.
2. Dimension “D” does not include molding flash, protrusions or gate burrs.
3. Dimension “E1” does not include inter-lead flash or protrusions.
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17/18
FP5139B
MSOP-8L
UNIT: mm
Symbols
Min. (mm)
Max. (mm)
A
1.100
A1
0.000
0.150
A2
0.750
0.950
D
3.000 BSC
E
4.900 BSC
E1
3.000 BSC
L
0.400
L1
θ°
0.800
0.950 REF
0°
8°
Notes:
1. Package dimensions are in compliance with JEDEC outline: MO-187 AA.
2. Dimension “D” does not include molding flash, protrusions or gate burrs.
3. Dimension “E1” does not include inter-lead flash or protrusions.
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Rev. 1.0
Website: http://www.feeling-tech.com.tw
18/18