FP6161
1.5MHz, 1A Synchronous Step-Down Regulator
General Description
The FP6161 is a high efficiency current mode synchronous buck PWM DC-DC regulator. The
internal generated 0.6V precision feedback reference voltage is designed for low output voltage. Low
R
DS (ON)
synchronous switch dramatically reduces conduction loss. To extend battery life for portable
application, 100% duty cycle is supported for low-dropout operation. Shutdown mode also helps saving
the current consumption. The FP6161 is packaged in DFN-6L, SOT23-5L, and TSOT23-5L to reduce
PCB space.
Features
Input Voltage Range: 2.5 to 5.5V
Precision Feedback Reference Voltage: 0.6V (±2%)
Output Current: 1A (Max.)
Duty Cycle: 0~100%
Internal Fixed PWM Frequency: 1.5MHz
Low Quiescent Current: 100μA
No Schottky Diode Required
Built-in Soft Start
Current Mode Operation
Over Temperature Protection
Package: DFN-6L (2x2mm), SOT23-5L, TSOT23-5L
Applications
Cellular Telephone
Wireless and DSL Modems
Digital Still Cameras
Portable Products
MP3 Players
Typical Application Circuit
V
IN
V
IN
SW
V
OUT
FP6161
RUN
FB / V
OUT
GND
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. 0.67
1/16
FP6161
Function Block Diagram
V
CC
Current
Sense
Slope
Compensation
OSC
Current
Limit
0.6V
FB/
V
OUT
+
Error
Amp.
-
+
PWM
Com-
parator
-
S
R
Q
Q
Switching
Control Logic
SR Latch
Pre-Driver
and
Anti Shoot-
through
SW
UVLO
0.3V
RUN
+
FBUV
Com-
parator
-
Shutdown
Control
Reference
Voltage
Generator
Reverse
Reverse
Current
Detector
OTP
GND
Pin Descriptions
DFN-6L
Name
NC
RUN
V
IN
SW
GND
FB / V
OUT
EP
No. I / O
1
2
3
4
5
6
7
I
P
O
P
I
P
No Connect
Enable Pin
Power Supply
Switch
Ground
Feedback
Description
SOT23-5L / TSOT23-5L
Name
RUN
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
ZYa
986
Exposed PAD – Must Connect to Ground
No. I / O
1
2
3
4
5
I
P
O
P
I
Enable
Ground
Switch
Power Supply
Feedback
Description
ZY986
GND
SW
V
IN
FB / V
OUT
Rev. 0.67
2/16
FP6161
Marking Information
DFN-6L
SOT23-5L / TSOT23-5L
Halogen Free:
Halogen free product indicator
Lot Number:
Wafer lot number’s last two digits
For Example: 132386TB
86
Part Number Code:
Part number identification code for this product. It should be always “ZY”.
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.
Website:
http://www.feeling-tech.com.tw
Rev. 0.67
3/16
FP6161
Ordering Information
Part Number
FP6161dR-LF-ADJ
FP6161KR-LF-ADJ
FP6161iR-LF-ADJ
Code
ZY
ZY
ZY
Operating Temperature
-40°C ~ +85°C
-40°C ~ +85°C
-40°C ~ +85°C
Package
DFN-6L
(2x2mm)
SOT23-5L
TSOT23-5L
MOQ
2500EA
3000EA
3000EA
Description
Tape & Reel
Tape & Reel
Tape & Reel
Absolute Maximum Ratings
Parameter
Input Supply Voltage
RUN, V
FB
, SW Pin Voltage
P-Channel Switch Source Current (DC)
N-Channel Switch Source Current (DC)
Peak SW Switch Sink and Source Current (AC)
DFN-6L
Thermal Resistance (Junction to Ambient)
θ
JA
SOT23-5L
TSOT23-5L
DFN-6L
Thermal Resistance (Junction to Case)
θ
JC
SOT23-5L
TSOT23-5L
Junction Temperature
Storage Temperature
DFN-6L
Allowable Power Dissipation
Lead Temperature (soldering, 10 sec)
P
D
SOT23-5L
TSOT23-5L
-65
Symbol Conditions
V
IN
Min.
-0.3
-0.3
Typ.
Max.
6
V
IN
1.5
1.5
2
+165
+250
+250
+20
+90
+90
+150
+150
750
500
500
+260
Unit
V
V
A
A
A
°C
/ W
°C
/ W
°C
/ W
°C /
W
°C
/ W
°C
/ W
°C
°C
mW
mW
mW
°C
Suggested IR Re-flow Soldering Curve
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. 0.67
4/16
FP6161
Recommended Operating Conditions
Parameter
Supply Voltage
Operating Temperature
Symbol
V
IN
Conditions
Min.
2.5
-40
Typ.
Max.
5.5
+85
Unit
V
°C
DC Electrical Characteristics
(T
A
= 25°C, V
IN
=3.6V, unless otherwise noted)
Parameter
Regulated Feedback Voltage
Line Regulation with V
REF
Output Voltage Line Regulation
RDS
(ON)
of P-Channel FET
RDS
(ON)
of N-Channel FET
SW Leakage
Peak Inductor Current
Quiescent Current
RUN Threshold
RUN Leakage Current
Oscillator Frequency
Symbol
V
FB
V
FB
V
OUT
Conditions
T
A
=25°C
-40°C ~+85°C
V
IN
=2.5V to 5.5V
V
IN
=2.5 to 5.5V
Min.
0.588
0.582
Typ.
0.6
0.6
0.04
0.04
0.28
0.25
±0.01
Max.
0.612
0.618
0.4
0.4
0.35
0.32
±1
1.875
1
1.5
±1
1.8
Unit
V
V
/V
%/V
Ω
Ω
µA
A
µA
µA
V
µA
MHz
R
DS(ON)
P I
SW
=100mA
R
DS (ON)
N I
SW
=-100mA
I
LSW
I
PK
I
CC
V
RUN
I
RUN
F
OSC
V
FB
=0.6V
1.2
V
RUN
=0V, V
IN
=5V
V
FB
=0.5V
Shutdown, V
RUN
=0V
Active, V
FB
=0.5V, V
RUN
=V
IN
0.3
1.125
1.5
0.1
100
1
±0.01
1.5
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. 0.67
5/16
嵌入式系统
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