R1212D002A RICOH [RICOH electronics devices division], R1212D002A Datasheet
R1212D002A
Related parts for R1212D002A
R1212D002A Summary of contents
Page 1
STEP-UP DC/DC CONTOLLER OUTLINE The R1212D Series are CMOS-based PWM step-up DC/DC converter controllers with low supply current. Each of the R1212D Series consists of an oscillator, a PWM comparator circuit, a reference voltage unit, an error amplifier, a reference ...
Page 2
R1212D BLOCK DIAGRAM Internal VR V REFOUT DTC V REF MPOUT SELECTION GUIDE In the R1212D Series, the oscillator frequency, UVLO detector threshold, and with/without internal limit of maximum duty cycle can be selected at the user's ...
Page 3
PIN CONFIGURATION PIN DESCRIPTION Pin No Symbol 1 EXT 2 GND 3 DTC 4 DELAY REFOUT 7 AMPOUT 8 ABSOLUTE MAXIMUM RATINGS Symbol V V Pin Voltage EXT Pin Output Voltage EXT V DELAY ...
Page 4
R1212D ELECTRICAL CHARACTERISTICS • R1212D100A Symbol Item V Operating Input Voltage Voltage Tolerance FB FB ∆V V Voltage Line Regulation /∆ ∆ Voltage Temperature FB FB ∆Topt Coefficient I V Input Current ...
Page 5
R1212D100B Symbol Item V Operating Input Voltage Voltage Tolerance FB FB ∆V V Voltage Line Regulation /∆ ∆ Voltage Temperature FB FB ∆Topt Coefficient I V Input Current ...
Page 6
R1212D • R1212D101A Symbol Item V Operating Input Voltage Voltage Tolerance FB FB ∆V V Voltage Line Regulation /∆ ∆ Voltage Temperature FB FB ∆Topt Coefficient I V Input Current FB FB ...
Page 7
R1212D101C Symbol Item V Operating Input Voltage Voltage Tolerance FB FB ∆V V Voltage Line Regulation /∆ ∆ Voltage Temperature FB FB ∆Topt Coefficient I V Input Current ...
Page 8
R1212D • R1212D102A Symbol Item V Operating Input Voltage Voltage Tolerance FB FB ∆V /∆V V Voltage Line Regulation ∆ Voltage Temperature FB FB ∆Topt Coefficient I V Input Current FB FB ...
Page 9
R1212D102C Symbol Item V Operating Input Voltage Voltage Tolerance FB FB ∆V V Voltage Line Regulation /∆ ∆ Voltage Temperature FB FB ∆Topt Coefficient I V Input Current ...
Page 10
R1212D TYPICAL APPLICATIONS AND TECHNICAL NOTES C1 Inductor NMOS Diode Use a 1µF or more capacitance value of bypass capacitor between V typical application above. Connect the capacitor as short as possible to the IC. ...
Page 11
Output Voltage Setting Method and Phase Compensation Making Method • The feedback voltage is controlled into 1.0V. The output voltage can be set with divider resistors for voltage setting, R1 and R2 as shown in typical application of the ...
Page 12
R1212D Output Current and Selection of External Components V Discontinuous Mode IL ILxmax ILxmin Ton T=1/fosc 1/ton There are two modes, or discontinuous mode and continuous mode for the PWM step-up switching regulator depending on the continuous characteristic of inductor ...
Page 13
In the continuous mode, the deviation of the current is equal between on time and off time − OUT Further, the electric power × 2 × I ...
Page 14
R1212D TIMING CHART <Soft-start Operation> The timing chart below describes the state of each pin from the power-on until the IC entering the stable operation. By raising the voltage of the DTC pin slowly, the switching duty cycle is limited, ...
Page 15
Protection Operation> The operation of Latch protection circuit is as follows: When AMPOUT becomes "H" and the IC detects maximum duty cycle, charge to an external capacitor and the voltage of DELAY pin reaches delay voltage ...
Page 16
R1212D TEST CIRCUITS REFOUT A A MPOUT GND D Fig.1 Consumption Current Test Circuit REFOUT A MPOUT GND D Fig.3 AMP "L" Output Current/ "H" Output Current Test Circuit REFOUT ...
Page 17
V EXT IN V REFOUT A MPOUT DTC V FB GND D ELAY Fig.7 D Pin Detector Threshold Test Circuit ELAY V EXT IN V REFOUT A MPOUT DTC V FB GND D ELAY Fig.9 Error AMP Gain/Phase Test Circuit ...
Page 18
R1212D C1 Fig.12 Output Current vs. Output Voltage/Efficiency, Response Characteristics Test Circuit Inductor NMOS Diode Inductor NMOS V EXT ELAY FB C2 GND A MPOUT DTC REFOUT ...
Page 19
TYPICAL CHARACTERISTICS 1) Output Voltage vs. Output Current (Topt=25°C) R1212D100A 5.10 5.05 5.00 4.95 4.90 0 100 200 300 Output Current I R1212D100A 15.3 15.2 15.1 15.0 14.9 14.8 14 100 Output Current I R1212D100B 10.2 10.1 10.0 ...
Page 20
R1212D R1212D101C 5.10 5.05 5.00 4.95 4.90 0 100 200 Output Current I R1212D101C 15.3 15.2 15.1 15.0 14.9 14.8 14 100 Output Current I 2) Efficiency vs. Output Current (Topt=25°C) R1212D100A 100 ...
Page 21
R1212D100A V OUT 100 100 150 200 Output Current I (mA) OUT R1212D100B V OUT 100 ...
Page 22
R1212D R1212D101C 100 100 Output Current I Voltage vs. Input Voltage (Topt =25° R1212D100x 1010 1005 1000 995 990 985 980 2 3 Input Voltage ...
Page 23
R1212D101C 350 330 310 290 270 250 Input Voltage V 6) Oscillator Frequency vs. Temperature R1212D10xA 800 775 750 725 700 675 650 625 600 -50 - Temperature Topt( C) R1212D10xC 350 330 310 290 ...
Page 24
R1212D 7) Supply Current vs. Input Voltage (Topt=25° load) R1212D100A 500 450 400 350 300 250 200 2 3 Input Voltage V R1212D101C 400 350 300 250 200 150 100 2 3 Input Voltage V 8) Supply Current ...
Page 25
R1212D10xC V =5.5V, EXT at no load IN 400 350 300 250 200 150 100 -50 - Temperature Topt EXT "L" On Resistance vs. Temperature R1212D10xx V =3.3V -50 ...
Page 26
R1212D 13) Duty Cycle vs. DTC Voltage (0% to 100%) (Topt=25°C) R1212D100A 100 0.1 0.2 0.3 0.4 DTC Voltage V R1212D101A 100 ...
Page 27
Maxduty vs. Temperature R1212D101A -50 - Temperature Topt( C) 16) AMP "L" Output Current vs. Temperature R1212D10xA/B V =3.3V 140 130 120 110 100 90 80 -50 - ...
Page 28
R1212D 18) UVLO Detector Threshold UVLO Released Voltage vs. Temperature R1212D100x 2.10 2.05 2.00 1.95 1.90 1.85 -50 -25 0 Temperature Topt( C) R1212D102x 3.2 3.1 Released Voltage 3.0 2.9 Detector Threshold 2.8 2.7 -50 -25 0 Temperature Topt( C) ...
Page 29
D Pin Discharge Current vs. Temperature ELAY R1212D10xx V IN 300 250 200 150 100 50 0 -50 - Temperature Topt( C) 23) V Voltage vs. Input Voltage (Topt=25°C) 24) REFOUT R1212D10xx 1.53 1.52 1.51 1.50 1.49 ...
Page 30
R1212D 27) Power-on Response (V R1212D100A Set V 6.0 5.0 4.0 3.0 2.0 1.0 0 Time (ms) R1212D100A Set V OUT 6.0 5.0 4.0 3.0 2.0 1.0 0 Time (ms) R1212D100A Set V OUT ...
Page 31
R1212D100B Set V =5V, I OUT OUT 6.0 V OUT 5.0 4.0 V 3.0 2.0 DTC 1.0 0 Time (ms) R1212D100B Set V =10V, I OUT OUT 6.0 5.0 4.0 3.0 2.0 1.0 0.0 0 ...
Page 32
R1212D R1212D101C Set V OUT 6.0 5.0 4.0 3.0 2.0 1.0 0 Time (ms) R1212D101C Set V OUT 6.0 5.0 4.0 3.0 2.0 1.0 0 Time (ms) R1212D101C Set V OUT 6.0 5.0 4.0 ...
Page 33
Load Transient Response (V 300 250 V OUT 200 150 100 50 I OUT 0 0 300 250 V OUT 200 150 100 50 I OUT 0 0 300 250 V OUT 200 150 100 50 I OUT 0 ...
Page 34
R1212D 300 250 V OUT 200 150 100 50 I OUT 0 0 300 250 V OUT 200 150 100 50 I OUT 0 0 300 250 V OUT 200 150 100 50 I OUT R1212D100A 5 ...
Page 35
V OUT 200 150 100 50 I OUT 300 250 V OUT 200 150 100 50 I OUT 300 250 V OUT 200 150 100 50 I OUT R1212D100B ...
Page 36
R1212D 300 250 V OUT 200 150 100 50 I OUT 0 0 300 250 V OUT 200 150 100 50 I OUT 0 0 300 250 V OUT 200 150 100 50 I OUT R1212D100B 5 ...
Page 37
V OUT 200 150 100 50 I OUT 300 250 V OUT 200 150 100 50 I OUT 300 250 V OUT 200 150 100 50 I OUT R1212D101C ...
Page 38
R1212D 300 250 V OUT 200 150 100 50 I OUT 0 0 300 250 V OUT 200 150 100 50 I OUT 0 0 300 250 V OUT 200 150 100 50 I OUT R1212D101C 5 ...
Page 39
PACKAGE INFORMATION • SON-8 PACKAGE DIMENSIONS 8 0.65 TAPING SPECIFICATION 2.0MAX. TAPING REEL DIMENSIONS (1reel=3000pcs) 2.9 ± 0.2 0.13±0.05 0.475TYP Attention : Tab suspension leads in the parts have V connected to the reverse side of this ...
Page 40
PACKAGE INFORMATION POWER DISSIPATION (SON-8) This specification is at mounted on board. Power Dissipation (P This specification is based on the measurement at the condition below: Measurement Conditions Environment Board Material Board Dimensions Copper Ratio Through-hole Measurement Result Power Dissipation ...
Page 41
... MARK INFORMATION R1212D SERIES MARK SPECIFICATION • SON • Part Number vs. Product Code Product Code Part Number R1212D002A R1212D100A R1212D100B R1212D101A R1212D102A R1212D101C R1212D102C ...