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RAA212421 Datasheet(PDF) 9 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) 9 Page - Renesas Technology Corp

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FN9309 Rev.3.00
Page 9 of 34
Jul 8, 2019
RAA212421
2. Specifications
Fault Protection
Thermal Shutdown
Temperature
TSD
Rising threshold
150
°C
THYS
Hysteresis
25
°C
Current Limit Blanking Time
tOCON
17
Clock
pulses
Overcurrent and Auto Restart
Period
tOCOFF
8
SS
cycle
Positive Peak Current Limit
IPLIMIT
(Note 8)
1.3
1.6
1.8
A
PFM Peak Current Limit
IPK_PFM
0.34
0.4
0.5
A
Zero Cross Threshold
15
mA
Negative Current Limit
INLIMIT
(Note 8)
-0.68
-0.6
-0.53
A
Power MOSFET
High-Side
RHDS
IPHASE = 100mA, VCC1 = 5V
313
mΩ
Low-Side
RLDS
IPHASE = 100mA, VCC1 = 5V
175
mΩ
LX1 Leakage Current
EN1 = LX1 = 0V
300
nA
LX1 Rise Time
tRISE
VIN1 = 40V
10
ns
EN1/SYNC1
Input Threshold
Falling edge, logic low
0.4
1
V
Rising edge, logic high
1.2
1.4
V
EN1 Logic Input Leakage
Current
EN1 = 0V/40V
-0.65
0.65
µA
SYNC1 Logic Input Leakage
Current
SYNC1 = 0V
10
100
nA
SYNC1 = 5V
1.0
1.55
µA
LDO Regulator
DC Characteristics
Input Voltage
VIN2
0°C < TJ < +125°C
1.8
6.0
V
-40°C < TJ < +125°C
2.2
6.0
V
Feedback Pin Voltage
VFB2
1.8V < VIN2 < 6V; 0A < ILOAD2 < 500mA
491
500
509
mV
Feedback Input Current
VFB2 = 0.5V
0.01
1
µA
Line Regulation
(VOUT2(LOW LINE) -
VOUT2(HIGH LINE))/
VOUT2(LOW LINE)
VIN2 = 1.8V to 6V; ILOAD2 = 100mA
-0.9
0.9
%
Load Regulation
(VOUT2(NO LOAD) -
VOUT2(FULL LOAD))/
VOUT2(NO LOAD)
VIN2 = 2.2V; ILOAD2 = 0A to 500mA
-0.7
0.7
%
Ground Pin Current
IQ2
ILOAD2 = 0A, 1.8V < VIN2 < 6V
2.2
4.6
mA
ILOAD2 = 500mA, 1.8V < VIN2 < 6V
2.8
5.7
mA
Ground Pin Current in
Shutdown
ISHDN
EN2 pin = 0V, VIN2 = 6V
0.2
12
µA
Dropout Voltage (Note 11)VDO
ILOAD2 = 500mA, VOUT2 = 2.5V
45
90
mV
Output Short-Circuit Current
OCP
VOUT2 = 0V
0.75
1.2
1.5
A
Thermal Shutdown
Temperature
TSD
160
°C
Recommended operating conditions, VCC1 = 3.3V, unless otherwise specified. (Continued)
Parameter
Symbol
Test Conditions
Min
(Note 9)
Typ
Max
(Note 9)Unit



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