ADP5070ACPZ-R7 datasheet(14/28 Pages) AD

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Data Sheet

ADP5070

Rev. A | Page 13 of 27

CH1 200mA BW

CH3 500mV

CH2 2.5V Ω BW 2.0µs

CH1

0.0A

T 34.6%

VPOS

IINDUCTOR

SW1

Figure 34. Boost Regulator Skip Mode Operation Showing Inductor Current

(IINDUCTOR), Switch Node Voltage, and Output Ripple, VIN = 5 V,

VPOS = 15 V, ILOAD1 = 4 mA, fSW = 2.4 MHz, TA = 25°C

CH1 200mA BW

CH3 500mV

CH2 2.5V Ω BW 100ns

CH1

152mA

T 34.6%

VPOS

IINDUCTOR

SW1

Figure 35. Boost Regulator Discontinuous Conduction Mode Operation

Showing Inductor Current (IINDUCTOR), Switch Node Voltage, and Output

Ripple, VIN = 5 V, VPOS = 15 V, ILOAD1 = 35 mA, fSW = 2.4 MHz, TA = 25°C

CH1 200mA BW

CH3 500mV

CH2 2.5V Ω BW 100ns

CH1

152mA

T 34.6%

VPOS

IINDUCTOR

SW1

Figure 36. Boost Regulator Continuous Conduction Mode Operation

Showing Inductor Current (IINDUCTOR), Switch Node Voltage, and Output

Ripple, VIN = 5 V, VPOS = 15 V, ILOAD1 = 90 mA, fSW = 2.4 MHz, TA = 25°C

CH1 100mA BW

CH3 500mV

CH2 5V Ω BW 2.0µs

CH1

T 17.4%

VNEG

IINDUCTOR

SW2

Figure 37. Inverting Regulator Skip Mode Operation Showing Inductor

Current (IINDUCTOR), Switch Node Voltage, and Output Ripple, VIN = 5 V,

VNEG = −5 V, ILOAD2 = 1 mA, fSW = 2.4 MHz, TA = 25°C

CH1 100mA BW

CH3 500mV

CH2 5.0V Ω BW 100ns

CH1

80mA

T 17.4%

VNEG

IINDUCTOR

SW2

Figure 38. Inverting Regulator Discontinuous Conduction Mode Operation

Showing Inductor Current (IINDUCTOR), Switch Node Voltage, and Output

Ripple, VIN = 5 V, VNEG = −5 V, ILOAD2 = 6 mA, fSW = 2.4 MHz, TA = 25°C

CH1 100mA BW

CH3 500mV

CH2 5V Ω BW 100ns

CH1

172mA

T 17.4%s

VNEG

IINDUCTOR

SW2

Figure 39. Inverting Regulator Continuous Conduction Mode Operation

Showing Inductor Current (IINDUCTOR), Switch Node Voltage, and Output

Ripple, VIN = 5 V, VNEG = −5 V, ILOAD2 = 35 mA, fSW = 2.4 MHz, TA = 25°C

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