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Ordering number : ENA2233
LV5980MD
Bi-CMOS IC
Low power consumption and highefficiency
Step-down Switching Regulator
http://onsemi.com
Overview
LV5980MD is 1ch DCDC converter with built-in power Pch MOSFET.
The recommended operating range is 4.5V to 23V.
The maximum current is 3A. The operating current is about 63μA,
and low power consumption is achieved.
Features and Functions
1ch SBD rectification DCDC converter IC with built-in power Pch MOSFET
Typical value of light load mode current is 63μA
4.5V to 23V Operating input voltage range
100mΩ High-side switch
Output voltage adjustable to 1.235V
The oscillatory frequency is 370kHz
ON/OFF Function
built-in OCP circuit with P-by-P method
When P-by-P is generated continuously, it shifts to the HICCUP operation
External capacitor Soft-start
Under voltage lock-out, thermal shutdown
SOIC10
Applications
Set top boxes
Point of load DC/DC converters
White Goods
DVD/Blu-raydrivers and HDD
Office Equipment
LCD monitors and TVs
POS System
Application Circuit Example
VIN
C1
10μF
×2
EN
C3
1μF
R1 VIN
47kΩ
C4 C6 C5
1μF 4.7nF 2.2nF
VIN L1 10μH
VOUT
PDR
SW
D1 R3 C2 5V
EN
REF LV5980MD FB
10μF
×3
R2
COMP
SS/HICCUP
SUBGND GND
C1: GRM31CB31E106K [murata]
C2: C2102JB0J106M [TDK]
L1: FDVE1040-100M [TOKO]
D1: SB3003CH [ON]
100 VOUT = 5V
90
80
70
Efficiency
VIN=8V
VIN=15V
VIN=12V
60
50
40
30
20
10
0
0.1 2 3 5 7 1
2 3 5 710 2 3 5 7100 2 3 5 71000 2 3 5 710000
Load current -- mA
ORDERING INFORMATION
See detailed ordering and shipping information on page 20 of this data sheet.
Semiconductor Components Industries, LLC, 2013
October, 2013
O3013NK 20131009-S00001 No.A2233-1/20

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LV5980MD
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
Input voltage
Allowable pin voltage
VIN max
VIN-SW
EN
25 V
30 V
VIN
VIN-PDR
REF
6V
6V
SS/HICCUP
REF
V
FB
REF
V
COMP
REF
V
Allowable power dissipation
Pd max
Specified substrate *1
1.3 W
Operating temperature
Storage temperature
TOPR
TSTG
-40 to +85
-55 to +150
°C
°C
*1 Specified substrate: 50.0 mm × 50.0 mm × 1.6 mm, fiberglass epoxy printed circuit board, 4 layers
Caution 1) Absolute maximum ratings represent the values which cannot be exceeded for any length of time.
Caution 2) Even when the device is used within the range of absolute maximum ratings, as a result of continuous usage under high temperature, high current,
high voltage, or drastic temperature change, the reliability of the IC may be degraded. Please contact us for the further details.
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
*1 Specified substrate : 50.0mm × 50.0mm × 1.6mm, fiberglass epoxy printed circuit board, 4 layers
Recommended Operating Conditions at Ta = 25°C
Parameter
Symbol
Conditions
Input voltage range
VIN
Electrical Characteristics at Ta=25°C, VIN=15V
Characteristic
Symbol
[Reference Voltage]
Conditions
Internal Reference Voltage
Pch Drive Voltage
[Saw Wave Oscillator]
VREF
VPDR
IOUT=0 ~ -5mA
Oscillatory Frequency
[ON/OFF Circuit]
FOSC
IC startup voltage (EN PIN)
Disable voltage (EN PIN)
[Soft Start Circuit]
VCNT_ON
VCNT_OFF
Soft Start • Source Current
Soft Start • Sink Current
[UVLO Circuit]
ISS_SC
ISS_SK
VIN = 3V, EN > 2V
VSS = 0.4V
UVLO Release Voltage
UVLO Lock Voltage
[Error Amplifier]
VUVLON
VUVLOF
FB = COMP
FB = COMP
Input Bias Current
Error amplifier gain
Output Sink Current
Output Source Current
[Over Current Limit Circuit]
IEA_IN
GEA
IEA_OSK
IES_OSC
FB = 1.75V
FB = 0.75V
Current Limit Peak
HICCUP Timer Start-up Cycle
HICCUP Comparator Threshold
Voltage
HICCUP Timer Discharge Current
ICL
NCYC
VtHIC
IHIC
*2 Test circuit
Ratings
4.5 to 23
Unit
V
Min.
Typ.
Max.
Units
1.210
VIN
-5.5
1.235
VIN
-5.0
310 370
1.260
VIN
-4.5
V
V
430 kHz
2.0 VIN V
0.3 V
1.2 1.8
300
2.4 uA
uA
3.3
3.02
3.7
3.42
4.1
3.82
V
V
-100
100
-30
8
-10
220
-17
17
nA
380 uA/V
-8 uA
30 uA
3.5 4.7
6.2 A
15 cycle
0.15
V
0.25
uA
Continued on next page.
No.A2233-2/20

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Continued from preceding page.
Characteristic
[PWM Comparator]
Maximum On-Duty
[Output]
Output On Resistance
[The entire device]
Standby current
Light Load Mode Consumption
Current
Thermal Shutdown
*2 Test circuit
Symbol
DMAX
RON
ICCS
ISLEEP
TSD
LV5980MD
Conditions
Io = 0.5A
EN < 0.3V
No switching
*3 Design guarantee
Min.
Typ.
Max.
Units
94 %
100 m
1 uA
63 83 uA
170 °C
*3 Design guarantee: Signifies target value in design. These parameters are not tested in an independent IC.
Pdmax - Ta
2.0
1.5
1.3
1.0
0.5
0
0.68
0 20 40 60 80 100
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Specified substrate
LV5980MD
Top Bottom
2nd/3rd layers
No.A2233-4/20

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Pin Connections
LV5980MD
Pin Function Description
Pin
Pin Name
Description
1 SW High-side Pch MOSFET drain Pin.
2
PDR
Pch MOSFET gate drive Voltage.
The bypass capacitor is necessarily connected between this pin and Vin.
3
GND
Ground Pin. Ground pin voltage is reference voltage
4
SS/HICCUP
Capacitor connection pin for soft start and setting re-startup cycle in HICCUP mode.
About 1.8uA current charges the soft start capacitor.
Error Amplifier Output Pin.
The phase compensation network is connected between GND pin and COMP pin.
5
COMP
Thanks to current-mode control, comp pin voltage would tell you the output current amplitude. Comp pin is
connected internally to an Init.comparator which compares with 0.9V reference. If comp pin voltage is larger than
0.9V, IC operates in “continuous mode”. If comp pin voltage is smaller than 0.9V,
IC operates in “discontinuous mode (low consumption mode)”.
Error amplifier reverse input pin.
6 FB ICs make its voltage keep 1.235V.
Output voltage is divided by external resistances and it across FB.
7
REF
Reference voltage.
8
SUBGND
Short-circuited and use 3pin and 8pin as GND
9 EN ON/OFF Pin.
Supply voltage pin.
10 VIN It is observed by the UVLO function.
When its voltage becomes 3.7V or more, ICs startup in soft start.
No.A2233-5/20