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RAA212421 Datasheet(PDF) 8 Page - Renesas Technology Corp

Part # RAA212421
Description  3V to 40V Input, 1.1A Synchronous Buck Regulator with Integrated 500mA LDO
PDF  34 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

RAA212421 Datasheet(HTML) 8 Page - Renesas Technology Corp

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FN9309 Rev.3.00
Page 8 of 34
Jul 8, 2019
RAA212421
2. Specifications
2.4
Electrical Specifications
Recommended operating conditions, VCC1 = 3.3V, unless otherwise specified.
Parameter
Symbol
Test Conditions
Min
(Note 9)
Typ
Max
(Note 9)Unit
Buck Regulator
Supply Voltage
VIN1 Voltage Range
VIN1
340
V
VIN1 Quiescent Supply Current
IQ1
SYNC1 = 5V, fSW = VCC1
8mA
VIN1 Shutdown Supply Current
ISD1
EN1 = 0V, VIN1 = 40V (Note 7)2
4
µA
VCC1 Voltage
VCC1
VIN1 = 6V, IOUT = 0 to 10mA
4.5
5.1
5.7
V
Power-On Reset
VCC1 POR Threshold
Rising edge
2.75
2.95
V
Falling edge
2.35
2.6
V
Oscillator
Nominal Switching Frequency
fSW
FS1 pin = VCC1
430
500
570
kHz
Resistor from FS1 pin to
GND1 = 340kΩ
240
300
360
kHz
Resistor from FS1 pin to
GND1 = 32.4kΩ
2000
kHz
Minimum Off-Time
tOFF
VIN1 = 3V
150
ns
Minimum On-Time
tON
(Note 10)90
ns
FS1 Voltage
VFS
RFS1 = 100kΩ
0.39
0.4
0.41
V
Synchronization Frequency
SYNC1
300
2000
kHz
SYNC Pulse Width
100
ns
Error Amplifier
Error Amplifier
Transconductance Gain
gm1
External compensation
165
230
295
µA/V
Internal compensation
50
µA/V
FB1 Leakage Current
VFB1 = 0.6V
1
150
nA
Current Sense Amplifier Gain
RT1
0.44
0.5
0.54
V/A
FB1 Voltage
TA = -40°C to +85°C
0.590
0.599
0.606
V
TA = -40°C to +125°C
0.590
0.599
0.607
V
Power-Good
Lower PG1 Threshold - VFB1
Rising
90
94
%
Lower PG1 Threshold - VFB1
Falling
82.5
86
%
Upper PG1 Threshold - VFB1
Rising
116.5
120
%
Upper PG1 Threshold - VFB1
Falling
107
112
%
PG1 Propagation Delay
Percentage of the soft-start time
10
%
PG1 Low Voltage
ISINK = 3mA, EN1 = VCC1, VFB1 = 0V
0.05
0.3
V
Tracking and Soft-Start (SS1)
Soft-Start Charging Current
ISS1
4.2
5.5
6.7
µA
Internal Soft-Start Ramp Time
EN1/SS1 = VCC1
1.5
2.4
3.4
ms



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