Ordering number : ENA1829A
Bi-CMOS IC
LV5061V
Overview
Low power consumption and high efficiency
Step-down Switching Regulator Controller
LV5061V is 1ch step-down switching regulator. The operation current is about 90μA, and low power consumption is achieved.
Functions
• 1ch SBD rectification controller IC • 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 can be set by the external pin. The oscillatory frequency is 300 kHz to 2.2MHz • Built-in UVLO, TSD
Specifications
Parameter Input voltage Allowable pin voltage
Maximum Ratings at Ta = 25°C
Symbol VIN max PDR,HDRV,RSNS, ILIM,EN,PG VIN-PDR REF SS,FB,COMP, C-HICCUP,RT Allowable power dissipation Operating temperature Storage temperature Pd max Topr Tstg Specified substrate *1 0.74 -40 to +85 -55 to +150 W ˚C ˚C 6 6 REF V V V Conditions Ratings 22 VIN Unit V V
*1: Specified substrate 114.3mm×76.1mm×1.6mm3 glass-epoxy
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. 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' s products or equipment.
O0610 SY/90810 SY 20100824-S00001 No.A1829-1/6
LV5061V
Recommended Operating Conditions at Ta = 25°C
Parameter Input voltage range VIN Symbol Conditions Ratings 4.5 to 18 Unit V
Electrical Characteristics at Ta = 25°C, VIN = 15V
Parameter Reference voltage Internal reference voltage Pch drive voltage Saw wave oscillator Oscillatory frequency ON/OFF circuit IC start-up voltage Disable voltage Soft start circuit Soft start source current Soft start sink current UVLO circuit UVLO release voltage UVLO lock voltage Error amplifier Input bias current Error amplifier gain Output sink current Output source current Over current limit circuit Reference current Over current detection comparator offset voltage RSNS pin input range HICCUP timer start-up cycle HICCUP comparator threshold voltage HICCUP timer change current PWM comparator Maximum On-duty Logic output Power good “L” sink current Power good “H” leakage current Power good threshold voltage Power good hysteresis Output Output on-resistance (High) Output on-resistance (Low) Output on-current (High) Output on-current (Low) The entire device Stand-by current Light load mode consumption current Thermal shutdown TSD ICCS ISLEEP1 EN1.5V, No switching *2 170 ˚C 50 70 1 90 μA μA RONH RONL IONH IONL 500 500 3 3 Ω Ω mA mA IPWRGD_L IPWRGD_H VtPG VPG_H PG=5V PG=5V 1.0 40 1.1 50 4 5 6 1 1.2 60 mA μA V mV D max 95 % IHIC 1 2 3 μA VRSNS NLCYCLES VtHIC 1.2 VIN-0.175 15 1.26 1.32 VIN V cycle V ILIM1 VLIM_OFS 48.4 -5 55 61.6 +5 μA mV IEA_IN GEA IEA_OSK IES_OSC FB=1.75V FB=0.75V -100 100 -40 10 -50 250 -20 20 100 400 -10 40 nA μA/V μA μA VUVLON VUVLOF FB=COMP FB=COMP 3.0 2.5 3.4 2.9 3.8 3.3 V V ISS_SC ISS_SK EN>1.5V EN>1.5V, ILIM>RSNS SS=4V at HICCUP 1.3 1.2 2.0 2.0 2.7 2.8 μA mA VCNT_ON VCNT_OFF 1.5 VIN 0.3 V V FOSC RT=470kΩ 280 330 380 kHz Vref VPDR IOUT=0 to -5mA 1.235 VIN-5.5 1.260 VIN-5.0 1.285 VIN-4.5 V V Symbol Conditions min Ratings typ max Unit
*2: Design certification
No.A1829-2/6
LV5061V
Package Dimensions
unit : mm (typ) 3178B
5.2 16 9
1.2
Pd max -- Ta
Specified circuit board : 114.3×76.1×1.6mm3 glass epoxy board
Allowable power dissipation, Pd max - W
4.4
6.4
0.8 0.74
0.5
1 0.65 (0.33)
8 0.15 0.22
1.5max
0.4
0.38
0 -40
-20
0
20
40
60
80
100
120
(1.3)
Ambient temperature, Ta - C
SANYO : SSOP16(225mil)
Block Diagram
VIN Hi:ON Lo:OFF
2.EN
0.1
Wake-up Band-gap Bias
1.26V
R3
+ uvlo.comp
REF TSD
HIC CUP.comp enable
16.REF
C5
Pch Drive
7.PDR
C3
4.VIN
R1 R2
VIN
C1 C10
C8
14.COMP
R6
12.SS
C6 C7
9,13.NC
+ -
1.PG
PG.comp slope
+ + -
FB
15.FB
err.amp
+ S R Q Q
1.1V
+ -
+ 15pluse counter
clk
11.C-HICCUP
+ pwm.comp
5.RSNS 3.ILIM
+ PbyP.comp
VIN
Level-shift
PDR
6.HDRV
L
OSC
C9 D1
R4
FB
10.RT
R7
8.GND
C2
R5
No.A1829-3/6
LV5061V
Pin Assignment
TOP VIEW PG 1 EN 2 ILIM 3 VIN 4 RSNS 5 HDRV 6 PDR 7 GND 8 16 REF 15 FB 14 COMP 13 N.C.
LV5061V
12 SS 11 C-HICCUP 10 RT 9 N.C.
Pin Descriptions
Pin No. 1 Pin name 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 Descriptions Equivalent circuit
PG
GND
2 EN ON/OFF pin
VIN
EN
GND
3 ILIM For current detection. Sink current is about 55μA. The current limiter comparator works when an external resistor is connected between this pin and VIN, and if the voltage of this resistor is less than the voltage of RSNS then Pch MOS is turned off. This operation is reset each PWM pulse.
VIN
ILIM
GND
4 VIN Supply voltage pin． It is observed by the UVLO function. When its voltage becomes 3.4V or more, ICs startup in soft start.
VIN
GND
5 RSNS Current detection resistor connection pin. Resistor is connected between VIN and this pin, and the current flows to MOSFET are measured.
VIN
RSNS
GND
Continued on next page.
No.A1829-4/6
LV5061V
Continued from preceding page. Pin No. 6 Pin name HDRV Descriptions The external high-side MOSFET gate drive pin． Equivalent circuit
VIN
HDRV
PDR
7 PDR Gate drive voltage of the external Pch MOSFET. Meanwhile, the bypass capacitor is connected between VIN and this pin.
VIN
PDR
GND
8 GND Ground Pin． Ground pin voltage is reference voltage.
VIN
GND
9 10 NC RT N.C. pin. Oscillation frequency setting pin. Resistor is connected between this pin and GND.
VIN
ILIM
GND
11 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
C-HICCUP
GND
12 SS Capacitor connection pin for soft start. About 2μA current charges the soft start capacitor.
VIN
SS
GND
13 14 NC COMP NC pin. Error Amplifier Output Pin． The phase compensation network is connected between GND pin and COMP pin． Thanks to current-mode control, COMP pin voltage would tell you the output current amplitude. COMP pin is connected internally to an int.comparator which comparators 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)”. Continued on next page.
VIN
COMP
GND
No.A1829-5/6
LV5061V
Continued from preceding page. Pin No. 15 Pin name FB Descriptions Error amplifier reverse input pin． ICs make its voltage keep 1.26V. Output voltage is divided by external resistors and it across FB. Equivalent circuit
VIN
FB
GND
16 REF Reference voltage.
VIN
REF
GND
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This catalog provides information as of October, 2010. Specifications and information herein are subject to change without notice. PS No.A1829-6/6
