tb62771ftg TOSHIBA Semiconductor CORPORATION, tb62771ftg Datasheet - Page 7

• Manufacturer Part Number: tb62771ftg
• Description: Step Up Type Dc/dc Controller Built In 4 Channel Sink Driver For White Led
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Electrical Characteristics
(Unless otherwise noted, VIN = VEN = 12V, RSETI = 15kΩ, CVCC = 1µF, VCC = VDRV,
CONFIDENTIAL
NDRV = COMP =OUT_= Open, VRSDT = VDIM = VCC, VOVP = VCS =PGND1 = PGND2 = AGND = 0V,
VCC REGULATOR
RT OSCILLATOR
PWM COMPARATOR
SLOPE COMPENSATION
Ta = -40~85°C, Typical value Ta = 25°C condition. )
VCC output voltage
VCC drop voltage
VCC current limit
VCC under lock out voltage
VCC under lock out voltage
hysteresis
Switching Frequency
Maximum Duty Cycle
Frequency Accuracy
Synchronized Signal Threshold
Minimum Synchronized
Frequency
PWM Comparator
Leading-Edge Blanking time
PWM-NDRV Propagation Delay
Peak Slope Compensation
Current
Characteristics
Characteristics
Characteristics
Characteristics
Symbol
Symbol
Symbol
Symbol
V
CC
f
SW
6.5V < VIN < 10V, 1mA < ILOAD < 50mA
10V < VIN < 40V, 1mA < ILOAD < 10mA
VIN - VCC, VIN = 4.75V, ILOAD = 50mA
VCC connects to AGND
VCC rising
f
f
f
vs. actual typical frequency
Peak slope for CS Input
SW
SW
SW
= 200kHz ~ 600kHz
= 600kHz ~ 2000kHz
= 200kHz ~ 2000kHz
7
Condition
Condition
Condition
Condition
Min
45
TB62771FTG/FNG
1.1f
4.75
Min
Min
200
Min
90
86
-7
4
-
-
-
-
-
-
SW
Typ.
50
Typ.
Typ.
Typ.
200
100
100
5.0
94
90
60
90
4
-
-
-
-
Max
55
2011-03-24
2000
5.25
Max
Max
Max
500
98
94
7
-
-
-
-
-
-
-
µA×fsw
Unit
Unit
Unit
Unit
kHz
mV
mV
mA
ns
Hz
V
%
%
V
V
V