8
8
8
4
1rem
1rem
1rem
1rem
rt-dark-800
headline-3
false
true
basicInfoTitle
12
12
12
12
left
buttonParametricSearch
text-with-icon
i18n(button-item.parametric-search.button-label)
i18n(button-item.parametric-search.button-link)
_self
true
buttonDatasheet
text-with-icon
secondary
i18n(button-item.datasheet.button-label)
i18n(button-item.datasheet.button-link)
_self
true
buttonContactUs
text-with-icon
secondary
i18n(button-item.contact-us.button-label)
i18n(button-item.contact-us.button-link)
_self
true
36
24
24
12
rt-dark-800
basicInfoSubtitle
width
fixed-width
altText
Product Spec Banner
backgroundColor
FFFFFF
id
basicInfoSection
basicInfoImageSwitcher
The RT9757 is a high efficiency and high charge current charger. The efficiency is up to 98.2% when V<sub>BAT</sub> = 4V, I<sub>BAT</sub> = 2A and the maximum charge current is up to 8A in DIV2 mode. The efficiency is up to 99.1% when V<sub>BAT</sub> = 4V, I<sub>BAT</sub> = 1A and the maximum charger current is up to 5A in bypass mode. The device integrates smart cap divider topology, direct charging mode, external overvoltage protection control, an input reverse blocking NFET and 2-way regulation, a dual-phase charge pump core, 14-way protection, 9-way system alarm, 8-Channel high speed analog-to-digital converter, USB BC 1.2 detection and UFCS protocol. The high speed analog-to-digital converter provides input and output voltage, current and temperature information for the host. The host can monitor the information by I<sup>2</sup>C serial interface.<br /><br />The recommended junction temperature range is -40°C to 125°C, and the ambient temperature range is -40°C to 85°C.
width
fixed-width
id
basicInfoImageSection
anchor
productDetailSection
i18n(anchor-tab.product-detail-section.title)
productDetailSectionAnchorTab
orderingInformationSection
i18n(anchor-tab.ordering-information-section.title)
orderingInformationSectionAnchorTab
technicalDocumentationSection
i18n(anchor-tab.technical-documentation-section.title)
technicalDocumentationSectionAnchorTab
designToolSection
i18n(anchor-tab.design-tool-section.title)
designToolSectionAnchorTab
applicationSection
i18n(anchor-tab.application-section.title)
applicationSectionAnchorTab
supportSection
i18n(anchor-tab.support-section.title)
supportSectionAnchorTab
width
full-width
id
anchorSection
24
24
24
24
i18n(tabs.product-detail.title)
productDetailTabs
i18n(tab-item.parameter-section.title)
parameterSection
parameterSectionTab
i18n(tab-item.package-size-pin-size-section.title)
packageSizePinsSizeSection
packageSizePinsSizeSectionTab
i18n(tab-item.product-feature-section.title)
productFeatureSection
productFeatureSectionTab
24
24
24
24
buttonSeeProductDifferences
text-with-icon
right
secondary-m
tertiary
i18n(button-item.see-product-differences.button-label)
i18n(button-item.see-product-differences.button-link)
_self
false
buttonFindOtherCategory
text-with-icon
right
secondary-m
tertiary
i18n(button-item.find-other-category.button-label)
i18n(button-item.find-other-category.button-link)
_self
false
32
32
32
32
width
fixed-width
backgroundColor
F5F6F8
id
productDetailSection
scrollable-table
parameterTable
width
fixed-width
id
parameterSection
normal-table
table-group
package-size-pins-size
packageSizePinsSizeTable
width
fixed-width
id
packageSizePinsSizeSection
productFeature
<div class="spec-list"><ul class="lv1"><li>Integrates Cap Divider Mode (DIV2 Mode) and Direct Charging Mode (Bypass Mode) </li><li>Supports BC1.2 and UFCS Protocol </li><li>External OVPMOS Control and Regulation <ul class="lv2"> <li></li><li>High Absolute Maximum Rating of 37V </li><li>Fast Reaction Time 100ns and Fast Turn Off Time 100ns </li><li>VBAT Voltage Regulation (VBAT REG) </li><li>IBAT Current Regulation (IBAT REG) </li></ul> </li><li>Dual-Phase Charge Pump Core <ul class="lv2"> <li></li><li>8A Output Current Capability </li><li>Efficiency Up to 98.2% when V<sub>BAT</sub> = 4V, I<sub>BAT</sub> = 2A (DIV2 Mode) </li><li>Efficiency Up to 99.1% when V<sub>BAT</sub> = 4V, I<sub>BAT</sub> = 1A (Bypass Mode) </li><li>100kHz to 1000kHz Variable Switching Frequency Stay Out of Audio Band </li><li>Spread Spectrum Technology for EMI Reduction </li></ul> </li><li>8-Channel 12-bit ADC <ul class="lv2"> <li></li><li>High Speed Data Rate for 128 Times Average Per Channel </li><li>VBUS, IBUS, VOUT, VBAT, IBAT, TDIE, DP, DM 8-Channel for Voltage/Current/Temperature Measurement </li></ul> </li><li>Input Reverse Blocking NFET <ul class="lv2"> <li></li><li>Block the Reverse Current </li></ul> </li><li>3-Error Charge Pump Switch Protection <ul class="lv2"> <li></li><li>VBUS Voltage Too High Error Protection before Switch (VBUS_HIGH_ERR) </li><li>VBUS Voltage Too Low Error Protection before Switch (VBUS_LOW_ERR) </li><li>CFLY Short Error Protection Before Switch (CFLY_DIAG) </li></ul> </li><li>11-Way System Protection <ul class="lv2"> <li></li><li>VAC Overvoltage Protection (VAC_OVP) </li><li>VBUS Overvoltage Protection (VBUS_OVP) </li><li>IBUS Overcurrent Protection (IBUS_OCP) </li><li>Higher IBUS Overcurrent Protection (IBUS_OCP_H) </li><li>IBUS Undercurrent Protection (IBUS_UCP) </li><li>VOUT Overvoltage Protection (VOUT_OVP) </li><li>VBAT Overvoltage Protection (VBAT_OVP) </li><li>IBAT Overcurrent Protection (IBAT_OCP) </li><li>Dropout Overvoltage Protection (VDR_OVP) </li><li>TS Over-Temperature Protection (TS_OTP) </li><li>Junction Over-Temperature Protection (TDIE_OTP) </li></ul> </li><li>9-Way System Alarm <ul class="lv2"> <li></li><li>VBUS Overvoltage Alarm (VBUS_OVP_ALM) </li><li>IBUS Overcurrent Alarm (IBUS_OCP_ALM) </li><li>IBUS Undercurrent Alarm (IBUS_UCP-ALM) </li><li>VBAT Overvoltage Alarm (VBAT_OVP_ALM) </li><li>IBAT Overcurrent Alarm (IBAT_OCP_ALM) </li><li>IBAT Undercurrent Alarm (IBAT_UCP-ALM) </li><li>TDIE Over-Temperature Alarm (TDIE_OTP_ALM) </li><li>DP Overvoltage Alarm (DP_OV_ALM) </li><li>DM Overvoltage Alarm (DM_OV_ALM) </li></ul> </li></ul></div>
width
fixed-width
id
productFeatureSection
24
24
24
24
i18n(tabs.ordering-information.title)
orderingInformationTabs
i18n(tab-item.product-section.title)
productSection
productSectionTab
i18n(tab-item.evb-section.title)
evbSection
evbSectionTab
i18n(tab-item.ordering-detail-section.title)
orderingDetailSection
orderingDetailSectionTab
24
24
24
24
width
fixed-width
id
orderingInformationSection
productImageSwitcher
normal-table
card-list
products
productTable
width
fixed-width
id
productSection
evbImageSwitcher
normal-table
card-list
evb
evbTable
width
fixed-width
id
evbSection
orderingDetail
width
fixed-width
id
orderingDetailSection
technical-documents
technicalDocumentMultipleTable
width
fixed-width
id
technicalDocumentationSection
design-tools
designToolMultipleTable
width
fixed-width
id
designToolSection
32
56
56
56
rt-blue-800
i18n(text.application-title.text-content)
applicationTitle
withLine
24
24
24
24
<div class="spec-list"><ul class="lv1"><li>Smart Phones </li><li>Tablet </li></ul></div>
applicationContent
35
35
35
35
keywordList
56
56
56
56
width
fixed-width
id
applicationSection
rt-blue-800
i18n(text.support-card-title.text-content)
supportCardTitle
withLine
40
40
40
24
supportCards
i18n(support-card-item.technical-support.title)
i18n(support-card-item.technical-support.description)
i18n(support-card-item.technical-support.learn-more-text)
i18n(support-card-item.technical-support.url)
technicalSupportCard
i18n(support-card-item.ordering.title)
i18n(support-card-item.ordering.description)
i18n(support-card-item.ordering.learn-more-text)
i18n(support-card-item.ordering.url)
orderingSupportCard
i18n(support-card-item.sales.title)
i18n(support-card-item.sales.description)
i18n(support-card-item.sales.learn-more-text)
i18n(support-card-item.sales.url)
salesSupportCard
56
56
56
32
width
fixed-width
id
supportSection