参数资料
型号: LTC3880EUJ#PBF
厂商: Linear Technology
文件页数: 87/112页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM CM 40-QFN
软件下载: LTpowerPlay™
标准包装: 61
系列: PolyPhase®
PWM 型: 电流模式
输出数: 2
频率 - 最大: 1MHz
电源电压: 4.5 V ~ 24 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 105°C
封装/外壳: 40-WFQFN 裸露焊盘
包装: 管件
LTC3880/LTC3880-1
PMBus COMMAND DETAILS
BIT(S)
B[14]
b[13]
b[12]
b[11]
b[10]
b[9]
b[8]
b[7]
b[6]
b[5]
b[4]
b[3]
b[2]
b[1]
b[0]
SYMBOL
Mfr_gpio_propagate_short_CMD_cycle
Mfr_gpio_propagate_ton_max_fault
Mfr_gpio0_propagate_vout_uvuf,
Mfr_gpio1_propagate_vout_uvuf
Mfr_gpio0_propagate_int_ot,
Mfr_gpio1_propagate_int_ot
Mfr_pwrgd1_en (Note 1)
Mfr_pwrgd0_en (Note 1)
Mfr_gpio0_propagate_ut,
Mfr_gpio1_propagate_ut
Mfr_gpio0_propagate_ot,
Mfr_gpio1_propagate_ot
Reserved
Reserved
Mfr_gpio0_propagate_input_ov,
Mfr_gpio1_propagate_input_ov
Reserved
Mfr_gpio0_propagate_iout_oc,
Mfr_gpio1_propagate_iout_oc
Mfr_gpio0_propagate_vout_uv,
Mfr_gpio1_propagate_vout_uv
Mfr_gpio0_propagate_vout_ov,
Mfr_gpio1_propagate_vout_ov
OPERATION
0: No action
1: Asserts low if commanded off then on before the output has sequenced off. Re-asserts high
120ms after sequence off.
0: No action if a TON_MAX_FAULT fault is asserted
1: Associated output will be asserted low if a TON_MAX_FAULT fault is asserted
GPIO0 is associated with page 0 TON_MAX_FAULT faults
GPIO1 is associated with page 1 TON_MAX_FAULT faults
Unfiltered VOUT_UV_FAULT_LIMIT comparator output
GPIO0 is associated with channel 0
GPIO1 is associated with channel 1
0: No action if the MFR_OT_FAULT_LIMIT fault is asserted
1: Associated output will be asserted low if the MFR_OT_FAULT_LIMIT fault is asserted
0: No action if channel 1 POWER_GOOD is not true
1: Associated output will be asserted low if channel 1 POWER_GOOD is not true
If this bit is asserted, the GPIO_FAULT_RESPONSE must be ignore. If the GPIO_FAULT_
RESPONSE is not set to ignore, the part will latch off and never be able to start.
0: No action if channel 0 POWER_GOOD is not true
1: Associated output will be asserted low if channel 0 POWER_GOOD is not true
If this bit is asserted, the GPIO_FAULT_RESPONSE must be ignore. If the GPIO_FAULT_
RESPONSE is not set to ignore, the part will latch off and never be able to start.
0: No action if the UT_FAULT_LIMIT fault is asserted
1: Associated output will be asserted low if the UT_FAULT_LIMIT fault is asserted
GPIO0 is associated with page 0 UT faults
GPIO1 is associated with page 1 UT faults
0: No action if the OT_FAULT_LIMIT fault is asserted
1: Associated output will be asserted low if the OT_FAULT_LIMIT fault is asserted
GPIO0 is associated with page 0 OT faults
GPIO1 is associated with page 1 OT faults
0: No action if the VIN_OV_FAULT_LIMIT fault is asserted
1: Associated output will be asserted low if the VIN_OV_FAULT_LIMIT fault is asserted
0: No action if the IOUT_OC_FAULT_LIMIT fault is asserted
1: Associated output will be asserted low if the IOUT_OC_FAULT_LIMIT fault is asserted
GPIO0 is associated with page 0 OC faults
GPIO1 is associated with page 1 OC faults
0: No action if the VOUT_UV_FAULT_LIMIT fault is asserted
1: Associated output will be asserted low if the VOUT_UV_FAULT_LIMIT fault is asserted
GPIO0 is associated with page 0 UV faults
GPIO1 is associated with page 1 UV faults
0: No action if the VOUT_OV_FAULT_LIMIT fault is asserted
1: Associated output will be asserted low if the VOUT_OV_FAULT_LIMIT fault is asserted
GPIO0 is associated with page 0 OV faults
GPIO1 is associated with page 1 OV faults
Note 1: The PWRGD status is designed as an indicator and not to be used for power supply sequencing.
For more information www.linear.com/LTC3880
3880fb
87
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