BD9740KN-E2 Rohm Semiconductor, BD9740KN-E2 Datasheet - Page 10

• Manufacturer Part Number: BD9740KN-E2
• Description: IC SWITCH REG W/FET 48UQFN
• Manufacturer: Rohm Semiconductor
• Series: -r
• Type: Step-Down (Buck), Step-Up (Boost), Inverting, PWMr

Specifications of BD9740KN-E2

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 7
• Voltage - Output: -
• Current - Output: 30mA
• Frequency - Switching: 100kHz ~ 1.2MHz
• Voltage - Input: 1.5 V ~ 10 V
• Operating Temperature: -20°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-VFQFN
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

●I/O Equivalent circuit diagrams
BD9739KN,BD9740KN
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DTC5
DTC6
DTC7
SS1
VREGA
CT (triangular waveform timing
capacitance connection)
SS1 (startup channel soft start
capacitor connection pin)
DTC5 to DTC7
(dead time control)
VREF (reference voltage output)
Vcc
Vcc
Vcc
Vcc
VREGA
Vcc
VBAT
Vcc
CT
VREF
Vcc
Vcc
INV2 to INV6,
INV7V
INV7I (error amp inverted input)
NON7 (error amp non - inverted input)
SCP
SCP (timer latch time setting
capacitor connection pin)
DELAY (POWERGOOD
time constant setting pin)
Fig. 9 I/O Equivalent Circuit Diagrams (1)
INV2 to INV6, INV7 V
(error amp inverted input)
Vcc
INV7I
Vcc
NON7
Vcc
Vcc
VREGA
10/14
DELAY
Vcc
VREGA
VREGA
VREF
UDSEL1 to
UDSEL 5
INV1
INV1
(error amp inverted input)
UDSEL (step-up/step-down select input)
VREGA (REGA output)
Vcc
Vcc
RT (triangular waveform timing
resistor connection)
Vcc
Vcc
Technical Note
2010.09 - Rev.A
Vcc
VREGA
VREGA
Vcc
Vcc
RT