R1211X Datasheet, PDF (8/33 Pages) RICOH electronics devices division – Step-up DC/DC Controller

qR1211X002D
Symbol
Item
VIN Operating Input Voltage
Conditions
VFB
∆VFB/
∆T
IFB
VFB Voltage Tolerance
VFB Voltage
Temperature Coefficient
VFB Input Current
VIN=3.3V
-40°C≤ Topt ≤ 85°C
VIN=6V, VFB=0V or 6V
fOSC Oscillator Frequency
VIN=3.3V, VDLY=VFB=0V
∆fOSC/ Oscillator Frequency
∆T ^{Temperature Coefficient}
IDD1 Supply Current 1
maxdty Maximum Duty Cycle
-40°C≤ Topt ≤ 85°C
VIN=6V, VDLY=VFB=0V, EXT at no load
VIN=3.3V, EXT “H” side
REXTH EXT “H” ON Resistance VIN=3.3V, IEXT=-20mA
REXTL
IDLY1
IDLY2
VDLY
EXT “L” ON Resistance VIN=3.3V, IEXT=20mA
Delay Pin Charge Current VIN=3.3V, VDLY=VFB=0V
Delay Pin Discharge Current V_IN=V_FB=2.5V, V_DLY=0.1V
Delay Pin Detector Threshold _{VIN=3.3V, VFB=0V, VDLY=0V→2V}
TSTART Soft-start Time
VIN=3.3V
VUVLO1 UVLO Detector Threshold VIN=3.3V→0V, VDLY=VFB=0V
VUVLO2 UVLO Detector Hysteresis VIN=0V→3.3V, VDLY=VFB=0V
ISTB Standby Current
VIN=6V, VCE=0V
ICEH CE “H” Input Current
VIN=6V, VCE=6V
ICEL CE “L” Input Current
VIN=6V, VCE=0V
VCEH CE “H” Input Voltage
VIN=6V, VCE=0V→6V
VCEL CE “L” Input Voltage
VIN=2.5V, VCE=2V→0V
MIN.
2.5
0.985
TYP. MAX.
6.0
1.000 1.015
±150
Unit
V
V
ppm/°C
-0.1
0.1
µA
240 300 360
kHz
±0.6
kHz/°C
300 500
µA
82
90
94
%
5
10
Ω
3
6
Ω
2.0
4.5 7.0
µA
2.5
5.5 9.0
mA
0.95 1.00 1.05
V
5.0 10.5 16.0
ms
2.1
2.2 2.3
V
0.08 0.13 0.18
V
0
1
µA
-0.5
0.5
µA
-0.5
0.5
µA
1.5
V
0.3
V
Rev. 1.10
-8-