Step-up (Boost) Converter
Step-Down (Buck) Converter
1110
RoHS Compliant and 100% Lead (Pb)-Free
Part Number
Vin
(min) (V)
Vin
(max) (V)
Vout
(min) (V)
Vout
(max) (V)
Output Adj. Method
Iq
(typ) (mA)
SW Current
Limit
(typ) (A)
Freq
(typ) (kHz)
Freq
(min) (kHz)
Freq
(max) (kHz)
Ron
(typ) (Ohm)
Features Package Type
RT4803 1.8 5.0 2.85 4.4 Digital 0.065 5 2500
Adjustable Current Limit; Current Mode Control; Cycle-by-Cycle Current Limit;
Enable Input; Internal Compensation; OCP; OVP; Power Good; UVP
WL-CSP1.67x1.67-16 (BSC)
RT4803A 1.8 5 2.85 4.4 Digital 0.055 4 2500 2000 3000 0.04; 0.06
Adjustable Current Limit; Current Mode Control; Cycle-by-Cycle Current Limit;
Enable Input; Internal Compensation; OCP; OVP; UVP
WL-CSP1.67x1.67-16 (BSC)
RT4805 1.8 5 2.85 4.4 Digital 0.055 4 2500 2000 3000 0.04; 0.06
Adjustable Current Limit; Current Mode Control; Cycle-by-Cycle Current Limit;
Enable Input; Internal Compensation; OCP; OVP; Power Good; UVP
WL-CSP1.67x1.67-16 (BSC)
RT4805A 1.8 5 2.85 4.4 Digital 0.055 4 2500 2000 3000 0.04; 0.06
Adjustable Current Limit; Current Mode Control; Cycle-by-Cycle Current Limit;
Enable Input; Internal Compensation; OCP; OVP; Power Good; UVP
WL-CSP1.67x1.67-16 (BSC)
RT4805B 1.8 5 2.85 4.4 Digital 0.055 4 2500 2000 3000 0.04; 0.06
Adjustable Current Limit; Current Mode Control; Cycle-by-Cycle Current Limit;
Enable Input; Internal Compensation; OCP; OVP; Power Good; UVP
WL-CSP1.67x1.67-16 (BSC)
RT4812 1.8 5.5 1.8 5.5 Resistor 0.09 500 0.03; 0.045 Enable Input; OCP; OVP; UVP TSOT-28 (FC)
RT4813 1.8 5.5 1.8 5.5 Resistor 0.12 6 500 0.026; 0.043 Adjustable Current Limit; OCP; OVP UQFN2x2-9 (FC)
RT4813A 1.8 5.5 1.8 5.5 Resistor 0.12 6 500 0.026; 0.043 OCP; OVP; UVP UQFN2x2-9 (FC)
RT4813C 1.8 5.5 1.8 5.5 Resistor 0.12 6 500 0.026; 0.043 Adjustable Current Limit; Enable Input; OCP; OVP; UVP UQFN2x2-9 (FC)
RT8509A 2.8 14 3.5 24 Resistor 5 5 1200 1000 1500 0.1 Current Mode Control; Enable Input; OCP; OVP; Stable with Ceramic Capacitor WDFN5x5-12
RT8541 2.7 16 90 Resistor 3.3 0.4 650 Adjustable Current Limit; Enable Input; OCP; OVP; UVP WQFN3x3-16
RT8541A 2.7 16 90 Resistor 3.3 0.4 360.0 1300.0 Adjustable Current Limit; Enable Input; OCP; OVP; UVP WQFN3x3-16
RT8561A 6 24 24 40 Digital; Resistor 3 1000 800 1200 0.3 Adjustable Soft-Start; Enable Input; OCP; OVP WQFN4x4-24
RT8580 3 5.5 40 Resistor 0.8 0.33 500 450 550 0.7 Enable Input; Internal Compensation; OCP; OVP; UVP SOT-26
RT9261 1 7 1.5 5 Fixed 0.018 0.08 120 80 160 Enable Input; OCP SOT-25; SOT-89
RT9261A 1 7 1.5 5 Fixed 0.018 0.08 120 80 160 Enable Input; OCP SOT-25; SOT-89
RT9261B 1 7 1.5 5 Fixed 0.036 0.16 190 140 320 Enable Input; OCP SOT-25; SOT-89
RT9266 2 6 2.6 6 Resistor 0.55 2 500 425 575 0.3 Enable Input; OCP; UVP SOT-26
RT9266B 2 6.5 2.6 6 Resistor 0.15 0.5 550 0.35 Enable Input; OCP; UVP SOT-26
RT9269 2 6.5 2.6 6 Resistor 0.03 0.5 500 0.4 Enable Input; OCP; UVP SOT-26
RT9276 1.2 5 3.3 5 Fixed; Resistor 0.1 2 1200 960 1440 0.24 Enable Input; OCP; OVP; SCP WDFN3x3-10
RT9277A 2.5 5.5 3 16 Resistor 2 1.6 1200; 640 640 1200 0.2 Adjustable Soft-Start; Enable Input; OCP; OVP; SCP MSOP-8
RT9277B 2.5 5.5 3 16 Resistor 2 1.6 1200; 640 640 1200 0.2 Adjustable Soft-Start; Enable Input; OCP; OVP; SCP MSOP-8
RT9277C 2.5 5.5 3 16 Resistor 2 1.6 1200; 640 640 1200 0.2 Adjustable Soft-Start; Enable Input; OCP; OVP; SCP MSOP-8; WDFN3x3-8
RT9277D 2.5 5.5 3 16 Resistor 2 1.6 1200; 640 640 1200 0.2 Adjustable Soft-Start; Enable Input; OCP; OVP; SCP MSOP-8; WDFN3x3-8
RT9278 1.5 5.5 2.4 5.5 Resistor 0.2 2 650 0.24 Enable Input; OCP; OVP VDFN3x3-10
RT9284A 2.7 5.5 6 20 Resistor 0.3 0.75 1200 900 1500 0.75 Enable Input; Internal Compensation; OCP; OVP TSOT-25; TSOT-26
RT9284B 2.7 5.5 6 20 Resistor 0.3 0.75 1200 900 1500 0.75 Enable Input; Internal Compensation; OCP; OVP TSOT-25; TSOT-26
RT9285C 2.7 5.5 Resistor 0.3 0.4 1000 0.75
Enable Input; Internal Compensation; OCP; OVP TSOT-26; WDFN2x2-8
RT9296 1.2 5 3.3 5 Resistor 0.1 2 1200 0.29 Enable Input; Internal Compensation; OCP; OVP; Power Good; UVP WDFN3x3-10
RT9297 2.6 5.5 2.6 24 Resistor 4 3.8 1240; 640 500 1500 0.125 Adjustable Soft-Start; Enable Input; OCP; OVP; UVP WDFN3x3-10
Part Number
Vin
(min) (V)
Vin
(max) (V)
Number of
Outputs
Vout
(min) (V)
Vout
(max) (V)
Preset Vout
(V)
Output Adj.
Method
Iout
(max) (A)
Current Limit
(typ) (A)
Freq
(typ) (kHz)
Freq
(min) (kHz)
Freq
(max) (kHz)
Ext Sync
Ron_HS
(typ) (mOhm)
Ron_LS
(typ) (mOhm)
Iq
(typ) (mA)
Package Type
RT2101A 2.95 6 1 0.827 3.6 Resistor 3 7 700 2000 Yes 45 42 0.55 WQFN3x3-16
RT2101B 2.95 6 1 0.827 3.6 Resistor 2 3.4 700 2000 Yes 45 42 0.55 WQFN3x3-16
RT2613A 2.95 6 1 0.827 Resistor 3 7 1000 700 2000 Yes 60 55 0.55 WQFN3x3-16
RT2652 2.7 5.5 1 0.6 5.5 Resistor 2 3.5 1200 No 110 70 0.11 WDFN3x3-10
RT2657 2.7 5.5 1 0.6 5.5 2.3 Resistor 0.6 1.5 2250 No 230 250 0.3 WDFN2x2-6S
RT2657BQ 2.7 5.5 1 0.6 5.5 Resistor 0.6 1.5 2250 No 230 250 0.3 WDFN3x3-8
RT2659H 1 6 1 0.6 2
Ext Vref;
Resistor
6 5.4; 7.6 1000; 600 No 20 10 1.1 VQFN3.5x4-20
RT2660A 0.8 6 1 0.4 2 Resistor 6 5.4; 7.6 1000; 600 No 20 10 1.1 VQFN3.5x4-20
RT2660H 1 6 1 0.6 2
Ext Vref;
Resistor
6 5.4; 7.6 1000; 600 No 20 10 1.1 VQFN3.5x4-20
RT2660L 1 6 1 0.6 2
Ext Vref;
Resistor
6 5.4; 7.6 1000; 600 No 20 10 1.1 VQFN3.5x4-20
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