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R1232D 数据表(PDF) 6 Page - RICOH electronics devices division

部件名 R1232D
功能描述  PWM STEP-DOWN DC/DC CONVERTER WITH SYNCHRONOUS RECTIFIER
Download  24 Pages
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制造商  RICOH [RICOH electronics devices division]
网页  http://www.ricoh.com
标志 RICOH - RICOH electronics devices division

R1232D 数据表(HTML) 6 Page - RICOH electronics devices division

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R1232D
6
R1232DxxxB/D
Topt
=25°C
Symbol
Item
Conditions
Min.
Typ.
Max.
Unit
VIN
Operating Input Voltage
2.6
5.5
V
VOUT
Step-down Output Voltage
VIN
=VCE=5.0V,IOUT=10mA
×0.980
×1.020
V
VFB
Feedback Voltage
VIN
=VCE=5.0V,IOUT=10mA
0.784
0.800
0.816
V
∆VOUT/∆Topt
Step-down Output Voltage
Temperature Coefficient
−40°C <
= Topt <
= 85°C
±150
ppm/
°C
fosc
Oscillator Frequency
VIN
=VCE=VSET+1.5V
1.91
2.25
2.58
MHz
IDD
Supply Current
VIN
=VCE=5.5V, VOUT=5.5V
170
240
310
µA
Istandby
Standby Current
VCE
=VOUT=0V, VIN=5.5V
0.0
5.0
µA
ILXleak
LX Leakage Current
VIN
=5.5V, VCE=0V,
VLX
=0V/5.5V
−5.0
0.0
5.0
µA
RONP
ON Resistance of Pch Transistor VIN
=5.0V, ILX=200mA
0.20
0.35
RONN
ON Resistance of Nch Transistor VIN
=5.0V, ILX=200mA
0.20
0.35
Maxduty
Oscillator Maximum Duty Cycle
100
%
tstart
Soft-start Time
VIN
=VCE=5.0V, at no load
0.15
0.4
0.7
ms
tprot
Protection Delay Time
VIN
=VCE=5.0V
0.1
2.0
10.0
ms
ILXlimit
LX Current Limit
VIN
=VCE=5.0V
1.0
1.4
A
VUVLO1
UVLO Detector Threshold
VIN
=VCE=2.6V -> 1.5V
2.10
2.25
2.40
V
VUVLO2
UVLO Released Voltage
VIN
=VCE =1.5V -> 2.6V
2.20
VUVLO1
+0.10
2.50
V
ICE
CE Input Current
VIN
=5.5V, VCE =5.5V/0V
−0.1
0.0
0.1
µA
IVOUT
VOUT Leakage Current
VIN
=5.5V, VCE=0V,
VOUT
=5.5V/0V
−0.1
0.0
0.1
µA
VCEH
CE "H" Input Voltage
VIN
=5.5V
1.5
V
VCEL
CE "L" Input Voltage
VIN
=3.0V
0.3
V
VTESTL
TEST "L" Input Voltage
VIN
=3.0V
0.3
V


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