Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer
'
s products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer
'
sproductsor
equipment.
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
O1310 SY 20100929-S00006 No.A1849-1/6
LV5990M
Overview
LV5990M is 1ch DC-DC converter with built-in power Pch MOS transistor. The recommended operating range is 4.5V to
18V. The maximum current is 3A. The operating current is about 90μA, and low power consumption is achieved.
Functions
• 1ch SBD rectification DC-DC converter IC with built-in power Pch MOS transistor
• Maximum value of light load mode current is 90μA.
• Built-in OCP circuit with P-by-P method
• When P-by-P is generated continuously, it shifts to the HICCUP operation.
• If connect C-HICCUP to GND pin, then latch-off when over current.
• The oscillatory frequency is 360kHz.
• UVLO and built-in TSD
Specifications
Maximum Ratings at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
Input voltage VIN-max 22 V
SW 30 V
EN, PG VIN V
PDR VIN -6 V
REF 6V
Allowable pin voltage
SS,FB,COMP
C-HICCUP
REF V
Allowable power dissipation Pd max specified substrate * 1.05 W
Operating temperature Topr -40 to 85 °C
Storage temperature Tstg -55 to 150 °C
* Specified board: 40.0mm × 30.0mm ×1.6mm, glass epoxy.
Bi-CMOS IC
Low power consumption and high efficiency
Step-down Switching Regulator
Orderin
g
numbe
r
: ENA1849
LV5990M
No.A1849-2/6
Recommended Operating Conditions at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
Input voltage renge VIN 4.5 to 18 V
Electrical Characteristics at Ta = 25°C, VIN = 15V
Ratings
Parameter Symbol Conditions
min typ max
Unit
Reference voltage
Internal reference voltage VREF 1.235 1.260 1.285 V
Pch drive voltage VPDR IOUT=0 to -5mA VCC-5.5 VCC-5.0 VCC-4.5 V
Saw wave osc i l l at or
Oscillatory frequency FOSC 300 360 420 kHz
ON/OFF circuit
IC startup voltage (EN pin) VCNT_ON 1.5 VIN V
Disable voltage (EN pin) VCNT_OFF 0.3 V
Soft start circui t
Soft start source current ISS_SC EN>1.5V 1.3 2 3 μA
Soft start sink current ISS_SK EN<0.3V, SS=0.4V 120 150 180 μA
UVLO circuit
UVLO release voltage VUVLON FB=COMP 3.0 3.4 3.8 V
UVLO lock voltage VUVLOF FB=COMP 2.5 2.9 3.3 V
Error amplifier
Input bias current IEA_IN -100 -50 100 nA
Error amplifier gain GEA 100 250 400 μA/V
Output sink current IEA_OSK FB=1.75V -40 -20 -10 μA
Output source current IEA_OSC FB=0.75V 10 20 40 μA
Over current limit circuit
Current limit peak ICL 3.2 4.7 6.2 A
HICCUP timer start-up cycle NLCYCLES 15 cycle
HICCUP comparator threshold voltage VtHIC 1.20 1.26 1.32 V
HICCUP timer charge current IHIC 12 3μA
PWM comparator
Maximum on-duty DMAX 95 %
Logic output
Power good “L” sink current Ipwrgd_L PG=5V 4 5 6 mA
Power good “H” leakage current Ipwrgd_H PG=5V 1 μA
Power good threshold FB voltage VtPG 1.0 1.1 1.2 V
Power good hysteresis VPG_H 40 50 60 mV
Power good impedance RPG 1 kΩ
Output
Output on-resistance RON IO=1A 150 mΩ
The entire device
Standby current ICCS EN<0.3V 1 μA
Light load mode consumption current Isleep1 EN>1.5V, ILOAD=0, No oscillatory
-20°C≤Ta≤70°C *
50 70 90 μA
Thermal shutdown TSD * 170 °C
*: Design certification
LV5990M
No.A1849-3/6
Pin Assignment
Package Dimensions
unit : mm (typ)
3403
1
2
3
4
12
11
10
9
SW VIN
GND
NC
PDR EN
PG
REF
Top view
5
6
8
7
C-HICCUP
SS
FB
COMP
LV5990M
SANYO : MFP12SJ(225mil)
5.0
4.4
0.1
6.4
0.63
12
12
0.15
0.3
0.8
(0.5)
1.7 MAX
(1.5)
-40 0 20 40 60 80 100
0
1.5
1.0
0.5
0.55
Pd max -- Ta
-20
1.05
Ambient temperature, Ta -- C
Allowable power dissipation, Pd max -- W
Mounted on a specified board: 40.0×30.0×1.6mm
3
glass epoxy
LV5990M
No.A1849-4/6
Block Diagram
Application Circuit
Wake-up
Band-gap
Bias
TSD
enable
1.26V uvlo.comp
HICCUP.comp
15pluse
counter
pwm comp
PbyP.comp
REF
Pch Drive
Level-shift
S
R
Q
Q
PDR
error.amperror.amp
PG.comp Init.comp
OSC
slope clk
gnd
VIN
REF
PDR
SW
GND
PG
FB
SS
COMP
C-HICCUP
EN
EN
C-HICCUP
COMP
SS
FB
PG
VIN
REF
PDR
SW
GND
VFB
VOUT
VFB
VIN=4.5V to 18V
LV5990M
No.A1849-5/6
Pin Function
Pin No. Pin name Function Equivalent circuit
1 SW High-side Pch MOSFET drain pin
VIN
SW
2 PDR Pch MOSFET gate drive voltage
The bypass capacitor is necessarily connected between this pin
and VIN.
VIN
PDR
GND
3 GND Ground pin.
Ground pin voltage is reference voltage.
12 VIN Supply voltage pin.
It is observed by the UVLO function. When its voltage becomes
3.4V or more. ICs startup in soft start.
5 C-HICCUP It is capacitor connection pin for setting re-startup cycle in
HICCUP mode.
If connect it to GND pin, then latch-off when over current.
VIN
GND
C-HICCUP
6 SS Capacitor connection pin for soft start.
About 2μA current charges the soft start capacitor.
VIN
GND
SS
7 COMP Error amplifier output pin.
The phase compensation network is connected between GND pin
and COMP pin.
VIN
GND
COMP
8 FB Error amplifier reverse input pin.
ICs make its voltage keep 1.26V.
Output voltage is divided by external resistances and it across FB.
VIN
GND
FB
Continued on next page.
VIN
GND
LV5990M
PS No.A1849-6/6
SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using
products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition
ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor Co.,Ltd.
products described or contained herein.
SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all
semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or
malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise
to smoke or fire, or accidents that could cause damage to other property. When designing equipment, adopt
safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not
limited to protective circuits and error prevention circuits for safe design, redundant design, and structural
design.
Upon using the technical information or products described herein, neither warranty nor license shall be granted
with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third
party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's
intellctual property rights which has resulted from the use of the technical information and products mentioned
above.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed
for volume production.
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the
SANYO Semiconductor Co.,Ltd. product that you intend to use.
In the event that any or all SANYO Semiconductor Co.,Ltd. products described or contained herein are
controlled under any of applicable local export control laws and regulations, such products may require the
export license from the authorities concerned in accordance with the above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise,
without the prior written consent of SANYO Semiconductor Co.,Ltd.
Continued from preceding page.
Pin No. Pin name Function Equivalent circuit
9 REF Reference voltage
VIN
GND
REF
10 PG Power good pin.
Connect to open drain of MOS-FET in ICs inside.
Setting output voltage to “L”, when FB voltage is 1.05V or less.
GND
PG
11 EN ON/OFF pin.
GND
EN
VIN
This catalog provides information as of October, 2010. Specifications and information herein are subject
to change without notice.
